Short bipolar

This is Short Height Bipolar Nema 17 stepper motor with 1.8 deg. step angle (200 steps/revolution). Each phase draws current 1A, allowing for a holding torque of 13Ncm(18.4oz.in). Electrical Specification: * Manufacturer Part Number: 17HS08-1004S * Motor Type: Bipolar Stepper * Step Angle: 1.8 deg. * Holding Torque: 13Ncm(18.4oz.in) * Rated Current/phase: 1.0A * Phase Resistance: 3.5ohms * Inductance: 4.5mH+/-20%(1KHz) Physical Specification: * Frame Size: 42 x 42mm * Body Length: 20mm * Shaft Diameter: 5mm * Shaft Length: 20mm * D-cut Length: 16.5mm * Number of Leads: 4 * Lead Length: 400mm * Weight: 140g Connection: Black(A+), Green(A-), Red(B+), Blue(B-) Warning: Make sure the motor connect to a constant current or chopper drive controller before you test motor. Connecting the motor directly to a power supply will destroy the motor.

Features: The processor uses high performance MCU ATmega328, and uses external 8MHz crystal oscillator as the system clock. Using 1.8 Inch LCD display, resolution of 128X160, support 65536 colors. Single button operation, support automatic shutdown for reducing power consumption. Support battery power supply, shutdown current less than 20nA. Each measurement time is about 2S, and only when measuring capacitance or inductance, the measurement time becomes longer. Automatic detection of NPN, PNP bipolar transistor, N channel, P channel MOSFET and JFET, diode, double diode, P-IGPT, thyristor, double thyristor and so on. For some thyristors and double thyristors, the transistor tester can not be tested when the current and current can not be satisfied. For some IGPT with a driving voltage of more than 5V, the transistor tester can not test it. Support the identification of the pins of test elements. Supports the measurement of current amplification factor and base emitter turn-on voltage of bipolar transistors. The Darlington transistor can be distinguished by the turn-on voltage and the current amplification factor. The gate threshold voltage, gate capacitance and drain to drain source resistance of the RDSon under the 5V gate voltage are tested to test the MOSFET. Supports simultaneous measurement of two resistors, and data is displayed in four bit decimal format. Support potentiometer test, but when the potentiometer is adjusted to one end, at this time can not distinguish between the intermediate pin and the end pin. The minimum resistance resolution is 0.01 ohms, and the maximum resistance is 50M ohm. A capacitor can be measured with a capacitance range of 25pf~100mF and a resolution of 1pF. The capacitance less than 25pF can be measured by parallel with another known capacitance greater than or equal to 25pF, and the measured capacitance value can be obtained by subtracting the known capacitance value. When the capacitance greater than 90nF is tested, the series equivalent resistance is also displayed, with a resolution of 0.01 ohms. When the capacitance greater than 5000pF is tested, the voltage loss after the test pulse can be measured, and the quality factor of the capacitor can be estimated by this parameter. Supports simultaneous measurement of two diodes with additional display diode voltage drop. LEDs are identified as diodes, and the test voltage drop is much larger than that of conventional diodes. The two-color diode is identified as two diodes. The equivalent inductance of the resistor less than 2100 ohms is also measured at the same time, with a range of 0.01mH~20H, but the measurement accuracy is not very good. Program with self-test function, support a variety of parameters calibration. Support frequency generator function, output by TP2, output frequency range from 1Hz to 2MHz. Support a fixed frequency signal output from the TP2, you can adjust the duty cycle by the button. Special attention: The capacitor must be discharged before testing the capacitor, otherwise it may damage the test pin. When testing the components on the circuit board, it is necessary to disconnect the power supply on the circuit board, and the residual voltage is not allowed on the test equipment. Hardware circuit: Each interface is illustrated as follows: J1: 2.54-2PIN white seat is used to input DC 7~12V voltage; S1: red button, reset button; S2: green button, operation button, used for one button operation of the entire circuit board; Instructions: 1. Components placed The transistor tester is very simple, and the test pins TP1, TP2 and TP3 are all in sequence. For only two pins, the components only need to be placed to any two test pins. For three pins of the components, randomly placed three test pins. Two resistors and two diodes can be tested at the same time. 2. Press the S1 reset button to shut down, and then press the S2 boot key to start a new measurement. 3. After the start of the long press S2 (more than 1S), enter the additional function selection interface, after a short press for moving the cursor on the attachment, long into the function interface button corresponding to the cursor interface, the various functions are as follows: Package included: 1 x ATmega328 digital transistor tester kits with shell

Yongnuo YN-568EXII Wireless TTL Flash Speedlite for Canon Camera The Yongnuo YN568EXII Speed Light  is the brand new range of speedlites which supports high-speed SYNC flash, TTL functions and remote wireless trigger. Compatible with N's and C's wireless flashing system, motor zooming and PC synchronous interface. Large size LCD display, multiple trigger mode, fast current-return functions never let you down. Features: •Supports master TTL flash: Master TTL wireless led flash function, supporting to led YONGNUO EX series lfashes, 600EX-RT, 580EXII, 430EXII and EX series flash. •Supports high-speed sync flash: The YN568EX II can synchronize with all shutter speeds, the maximum shutter sync up to . •  Compatible with N's and C's wireless flashing system, it is able to respectively accept internal flashing of YN568EX II, 580EX II, SB-D / 60D / 600D, C order of N's internal flashing and wireless signal of SU-800 and ST-E2, supports 4 channels, achieves external TTL and manual flashing. •  Large-size LCD display: The functions can be checked and set on a more clearly and visually and can be basis and can be used more conveniently by Large-size LCD display. •  Multiple trigger mode supported: It can be triggered by the camera set-top, built-in or master control flashing command, S1 and S2 pre-flashing. •Equipped with electronic zooming (mm): The covered focal length will vary between mm on the lamp adapter by operating the zoom button on the flash light. •Comprehensively supports TTL functions: HSS, FEC, FEB, Rear-curtain sync, FE lock, Modeling Light, Canon camera menu access able. •Remote wireless trigger supported: The YN568EX II supports remote wireless trigger function, which makes the Sc / Sn / S1 / S2 mode can be used in outdoor environment and the wireless trigger distance is as long as 15 meters. •Sound prompting system: When the sound prompting system is enabled, the different sound ways will prompt the different working conditions of the speed light so as to make you focus on shooting only. •Equipped with 2.5mm PC Synchronous Interface: The time for full gloss output current-return will only take you 3 seconds; you can get fast current-return experience even without brand-new batteries which will only take you 4~5 seconds. •Advanced option functions: YN568EX II has advanced options setting function, where you can self-define the functions of the speedlite as your own requirements. •Automatic saving functions: YN568EX II can automatically save the current operation currently used for your use later. Specifications: •  Circuit Design: Insulated Gate Bipolar Transistor (IGBT) •Guide Number:  58 (ISO mm) •Flash Mode: TTL, M, Multi •Trigger Mode: Set-top, Sc, Sn, S1, S2 •Zoom Range: Auto, mm •Vertical Rotation Angle: -7~90 degrees •Horizontal Rotation Angle: degrees •Power Supply: 4X AA size batteries (Alkaline or Ni-MH are usable) •Lighting Times: times (AA alkaline cell used) •Recycle Time: Approx. 3s (AA alkaline cell used) •Color Temperature: k •Flash Time: s~s •Flash Control: 8 levels of output control ( levels of fine tuning External interface hot shoe, PC port •Wireless Triggering Distance: m indoor, m outdoor •Additional Feature: Master flash, High-speed sync, Rear-curtain sync, FEC, FEB, FEV, the electronic flash head zooming, sound prompt, automatically saving setting, PC port, power saving mode, over heat protection, advanced setting. •Dimension: 60 X 73 X 190 mm (Extended state) •100% Brand New Note: •To avoid fire or electrical shock, do not expose this  device to rain or moisture. •To avoid short circuit, be sure the batteries contacts are  securely packed and in a accordance with local provision  when handing the batteries. •Please keep the batteries and the parts away from children.  Small parts may cause choking or serious injury if  swallowed. •Prohibit to shoot eyes directly in case of injury. •Do not disassemble or service this product by yourself.  Touching the internal high voltage circuit will cause  electric shock. •Warranty: 12 months Suitable for: •Camera: Canon 7D, 60D, 600D •Flash: Canon 580EX II, Nikon Nikon SB-900, SB-800,  SB-700 •Suitable Camera in TTL function: Canon 1Ds series,1D  series, 5D, 5DII, 7D, 40D, 50D, 60D,350D,  400D/XTi,450D/XSi, 500D/T1i, 550D/T2i, 600D/T3i, D,  D (Not compatible with 20D, 30D) •Suitable Camera in S1 / S2 mode: Any DSLR camera with  standard hot shoe Package Includes: •1 X Yongnuo YN568EXII Flashlight •1 X Protective Bag •1 X Mini Stand •1 X English Manual •1 X Original Packing Diffuser included I ONLY POST TO ADDRESSES IN SOUTH AFRICA - NO INTERNATIONAL SALES  

In full working condition. Retails for US$ The Samson SX stereo power amplifier has been designed to provide robust, clean output with low distortion and wide dynamic range, along with the dependability demanded by professional audio engineers and installersThe Samson SX Series stereo power amplifiers have been designed to provide robust, clean output with low distortion and wide dynamic range, along with the dependability demanded by the most professional audio engineers and installers.The SX is the most powerful addition in the SX series of amplifiers. Boasting a staggering Watts of Class H power in a two rack space design. The SX is a perfect solution for driving professional audio systems of any size. The SX Amps are built around a new power core design with over-sized toroidal transformers and extra-large heat sinks. The amps maintain cool operating temperatures thanks to an innovative forced-air cooling system with temperature sensitive variable-speed fans.Trouble free operation is provided by multi-stage protection for power-up, over-heating, over-current, short circuit, low output impedance and DC voltage, assuring total reliability under the most demanding conditions. The entire SX line is 2 Ohms stable and features locking XLR/TRS inputs, Speakon® and 5-way binding post speaker outputs.Features:• Professional High Power Rail-switching Amplifier• 800 Watts per side @ 8 Ohms• Watts per side @ 4 Ohms• Watts bridged mono @ 4 Ohms• Dual Variable-speed Fan Cooling• Signal, Peak, and Protection Circuit Indicators• 5-way Binding Post and Speakon™ Speaker Outputs• XLR and TRS Input Connections• Dual Rack Space DesignHighlights:• Clean, crisp sound - Impressive audio specifications such as 0.04% THD, dynamic range of 105 dB, crosstalk of 80 dB, and frequency response of 10 Hz to 55 kHz guarantee ultra-clean sound quality.• Independent input level controls for each channel allow precision adjustments.• LED signal indicators for each channel continuously display power output levels and allow you to correct for overloading (clipping) conditions.• Unique stable bipolar circuit design that continuously keeps DC output during idling at or near zero volts (thus keeping idle speakers at their zero point). This serves to minimize heat overload problems by effectively preventing the SX Series from applying power when unnecessary.• Forced air cooling via two temperature-sensitive, variable speed fans provides reliable performance without thermal and overheating problems.• Protection relay circuitry (with dedicated LEDs for each channel) that guards against overheating or faulty wiring conditions and also prevents “thumps” when powering on or off. This means that you can use the SX Series with a single power strip into which a mixer or other audio devices are connected, without danger of damage to connected speakers.• Combination input connectors for each channel accommodate both balanced XLR or balanced 1/4-inch TRS plugs.• Output connections are made via 5-way binding posts and Speakon™ connectors.• Toroidal transformer power supply for high current and low profile.• User-resettable circuit breaker for fast, easy startup following a power supply overload.• The SX Series can be mounted in any standard 19" rack (taking just two rack spaces), making it easy to integrate the amp into any fixed or traveling PA rig.• Rugged construction (an all-steel chassis with a cool gray finish and a lightweight anodized aluminum heat sink) makes the SX Series eminently roadworthy.• Last but certainly not least, value. The Samson SX Series has been designed from the ground up to deliver excellent sound.

INSEESI-IN560-IV flash Speedlight for Canon   Description  High sensitivity wireless triggering sensor makes S1 and S2 mode can be used in outdoor environment and the wireless triggering distance is as long as 15m. Sound prompt function, different sounds indicate working situations and helps you focus on shooting (Note: the sound can be closed).Provides PC port, you can make the flash synchronously by connecting to the PC port. Super speed of charging recycle: it only takes 3 seconds in charging after full power output. Even without new batteries, you can get the supercharging speed that it only needs 4~5 seconds; In addition, you can use the external power pack to accelerate charging speed once more. Specifications: Circuit design  -  Insulated Gate Bipolar Transistor (IGBT) Guide No.  -  50 (ISO 100) Flash modes  -   M, S1, S2, LED Vertical rotation angle  -     -7~90 degrees Horizontal rotation angle  -   0~270 degrees Power supply  -   4 * AA batteries (not included) Lighting times  -   100~1500 times Recycle time  -   approx. 3s Color temperature   -  5600k Flash time   -  1/200s~1/20000s Flash control  -   8 levels of output control (1/128~1/1), 29 levels of fine tuning External interface   -  hot shoe, PC port Wireless triggering distance  -   10~15m Additional features   -  sound indicator, automatically saving, PC port, power saving mode and overheating protection Dimensions   -  approx. 190 * 78 * 60mm (Extended state) Net weight   -  310g  Package size   -  21 * 9.5 * 8cm Package weight   -  Approx. 450g Note: To avoid fire or electrical shock, do not expose this  device to rain or moisture. To avoid short circuit, be sure the batteries contacts are  securely packed and in a accordance with local provision  when handing the batteries. Please keep the batteries and the parts away from children.  Small parts may cause choking or serious injury if  swallowed. Prohibit to shoot eyes directly in case of injury. Do not disassemble or service this product by yourself.  Touching the internal high voltage circuit will cause  electric shock. Suitable for: Package Includes: 1 x IN560 IV flash 1 x Protecting bag 1 x Flash Stand 1 x Manual I ONLY POST TO ADDRESSES IN SOUTH AFRICA - NO INTERNATIONAL SALES

Descriptions: The Yongnuo YN500EX Speed Light is the brand new range of speedlites which supports high-speed SYNC flash, TTL functions and remote wireless trigger. Compatible with N's and C's wireless flashing system, motor zooming and PC synchronous interface. Large size LCD display, multiple trigger mode, fast current-return functions never let you down. Supports high-speed sync flash: The YN500EX can synchronize with all shutter speeds, the maximum shutter sync up to 1/8000. Compatible with N's and C's wireless flashing system, it is able to respectively accept internal flashing of 580EX II, SB-900 / 800 / 700, 7D / 60D / 600D, C order of N's internal flashing and ST-E2 wireless signal, achieves external TTL and manual flashing. Large-size LCD display: The functions can be checked and set on a more clearly and intuitively basis and can be used more conveniently. Multiple trigger mode supported: It can be triggered by the camera set-top, built-in or main controlled flashing command, S1 and S2 preflashing. Supports power-driven zooming (24~105mm): The covered focal length will vary between 24~105mm on the lamp adapter by operating the zoom button on the flash light. Comprehensively supports TTL functions: HSS, FEC, FEB, Rear-curtain sync, FE lock, Modeling Light, EOS camera menu access able. Remote wireless trigger supported: The YN500EX supports remote wireless trigger function, which makes the Sc / Sn / S1 / S2 mode can be used in outdoor environment and the wireless trigger distance is as long as 15 meters. Sound prompting system: When the sound prompting system is enabled, the different sound ways will prompt the different working conditions of the speed light so as to make you focus on shooting only. Supplied with PC synchronous interface: It makes easier that lightening the speed light synchronously by using PC synchronous line. Fast current-return system: The time for full gloss output current-return will only take you 3 seconds; you can get fast current-return experience even without brand-new batteries which will only take you 4~5 seconds. Advanced option functions: YN500EX has advanced options setting function, where you can self-define the functions of the speedlite as your own requirements. Automatic saving functions: YN500EX can automatically save the operation currently used for your use later. Specifications: Circuit Design: Insulated Gate Bipolar Transistor (IGBT) Guide Number: 53 (ISO 100, 105mm) Flash Mode: TTL, M, Multi, Sc, Sn, S1, S2 Zoom Range: Auto, 24, 35, 50, 70, 80, 105mm Vertical Rotation Angle: -7~90 degrees Horizontal Rotation Angle: 0~270 degrees Power Supply: 4X AA size batteries (Alkaline or Ni-MH are usable) Lighting Times: 100~1500 times (AA alkaline cell used) Recycle Time: Approx. 3s (AA alkaline cell used) Color Temperature: 5600k Flash Time: 1/200s~1/20000s Flash Control: 7 levels of output control (1/64~1/1), 25 levels of fine tuning External Interface: Hot Shoe, PC shot Wireless Triggering Distance: 20~25m indoor, 10~15m outdoor Additional Feature: High-speed sync, Rear-curtain sync, FEC, FEB, FEV, the electronic flash head zooming, sound prompt, automatically saving setting, PC port, power saving mode, over heat protection, advanced setting. Dimension: 62 X 72 X 165 mm (Extended state) Weight: Approx. 500g Suit for: Wirelss TTL Slave mode:For EOS 5DIII 7D 60D 600D 650D, Yongnuo ST-E2, EOS 580EX II Camera with CLS i-TTL system:D4, D3x, D3s, D3, D2x, D700, D300s, D300, D200, D7000, D90, D80 Hot shoe TTL mode:For EOS 1Dx, 1Ds series, 1D series, 5DIII, 5DII, 5D, 7D, 60D, 50D, 40D, 30D, 20D, 650D/T4i, 600D/T3i, 550D/T2i, 500D/T1i, 450D/Xsi, 400D/Xti, 350D, 1100D, 1000D. You should use the External Flash Menus when you use it with (1Ds II, 1Ds, 1D II, 1D, 5D, 30D, 20D, 10D, 400D, 350D, 300D) Yongnuo Flash Trigger YN-622C. Note: To avoid fire or electrical shock, do not expose this device to rain or moisture. To avoid short circuit, be sure the batteries contacts are securely packed and in a accordance with local provision when handing the batteries. Please keep the batteries and the parts away from children. Small parts may cause choking or serious injury if swallowed. Prohibit to shoot eyes directly in case of injury. Do not disassemble or service this product by yourself. Touching the internal high voltage circuit will cause electric shock. Package Included: 1 x Yongnuo YN500EX Flashlight 1 x Protective Bag 1 x Mini Stand 1 x English Manual 1 x Original Packing

This is a short geared NEMA 17 Stepper motor. It has an integrated planetary gearbox with a 26.85:1 gear ratio, the resolution reach 0.067 deg. step angle. It's a good solution in applications that need very low rotation speeds and/or lots of torque. Electrical Specification: * Manufacturer Part Number: 17HS13-0404S-PG27 * Motor Type: Bipolar Stepper * Step Angle: 0.067 deg. * Holding Torque: 3Nm * Rated Current/phase: 0.4A * Phase Resistance: 30ohms * Inductance: 34mH+/-20%(1KHz) Gearbox Specifications: * Gearbox Type: Planetary * Gear Ratio: 26.85:1 * Efficiency: 81% * Backlash at No-load:

Key Features LCD and layout of controls designed for easy and intuitive operation Multi-step auto zoom covers wide 24-120 mm zoom range Three illumination patterns�standard, center-weighted and even�available to match every shooting environment Automatically detects Nikon FX and Nikon DX formats and selects suitable light distribution angle Short recycling time AF-assist illumination for multi-point AF, with wide 24-135 mm focal range Quick wireless control mode allows control of remote flash unit groups A and B flash output level ratios Firmware updates via Nikon digital SLR cameras Automatically delays recycling time if temperature of flash head rises in order to avoid deterioration of flash head Automatically detects type of hard-type color compensation filter (fluorescent and incandescent) and automatically transmits filter information to camera for optimum white balance setting Optional Water Guards WG-AS1 (for D3 series), WG-AS2 (for D300 series) and WG-AS3 (for D700) protect camera's accessory shoe contact when SB-700 is mounted on a Nikon digital SLR camera Specifications Electronic construction Automatic Insulated Gate Bipolar Transistor (IGBT) and series circuitry Guide number (35 mm zoom head position, FX format, Standard illumination pattern) 28/92 (ISO 100, m/ft.), 39/128 (ISO 200, m/ft.) Illumination pattern Three illumination patterns: standard, even and center-weighted The light distribution angle is automatically adjusted to the camera's image area in both FX and DX formats Effective flash output distance range (in i-TTL mode) 0.6 m to 20 m (2 ft. to 66 ft.) (varies depending on camera image area setting, illumination pattern, ISO sensitivity, zoom head position and lens aperture in use) Flash mode i-TTL, manual flash, distance-priority manual flash Other functions Test firing, monitor pre-flashes, AF-assist illumination for multi-point AF, and modeling illumination Multiple flash-unit photography operation Advanced Wireless Lighting, SU-4 type wireless multiple flash-unit photography Compatible cameras All cameras compatible with Nikon Creative Lighting System (other cameras can be used but functionality is reduced) Flash exposure control set on the camera Camera sync modes: slow sync, red-eye reduction slow-sync, front-curtain sync, rear-curtain sync, rear-curtain slow-sync Photography functions: auto FP high-speed sync, FV lock, red-eye reduction Bounce capability Flash head tilts down to 7� or up to 90� with click-stops at -7�, 0�, 45�, 60�, 75�, 90� Flash head rotates horizontally 180� to the left and right with click-stops at 0�, 30�, 60�, 75�, 90�, 120�, 150�, 180� Power source Four AA-type alkaline (1.5V), lithium (1.5V) or Ni-MH (1.2V) batteries Flash-ready indicator Fully recycled: lights up Insufficient flash output for correct exposure (in i-TTL or distance-priority manual flash mode): blinks Flash duration Approx. 1/1042 sec. at full output Mounting foot lock lever Provides secure attachment of SB-700 to camera's accessory shoe using locking plate and locking pin to prevent unintentional detachment. Dimensions (W x H x D) Approx. 71 x 126 x 104.5 mm (2.8 x 5.0 x 4.1 in.) Weight (without batteries) Approx. 360 g (12.7 oz.)

M328 Multifunctional LCD Backlight Transistor Tester Diode Thyristor Capacitanc Package weight: 0.15 kg Description: M328 Multi-functional LCD Backlight Transistor Tester Diode Thyristor Capacitance ESR Meter Tester LCR Multi-functional transistor tester for automatic detection of NPN and PNP transistors, N-channel and P-channel MOSFET, diodes, thyristors, resistors, capacitors or other devices. Easy and convenient to operate. F eatures: The display is 128x64 LCD with backlight in blue color. Powered by 9V battery. All components are protected by a grey plastic case, convenient to carry. Automatically detect NPN and PNP transistors, N-channel and P-channel MOSFET, diodes, thyristors, resistors, capacitors or other devices. Automatically test the pins of a component and display on the LCD. Measure the gate threshold voltage and gate capacitance of the MOSFET. Measure bipolar transistor current amplification factor and base-emitter threshold voltage. Two-button operation, automatic shutdown to avoid unnecessary waste. Short detection time: only 2 seconds. It is normal to cost 1 minute for bulk capacitor detection. Note: Please make sure that capacitors are discharged before testing. Specification: Material: PCB + Plastic Display: 128 x 64 LCD Shutdown Current: 20nA Resistor Test Range: 0.5-50M Inductor Test Range: 0.01mH-20H Capacitor Test Range: 25pF-100000uF Item Size: 13 x6.5 x2cm / 5.1 x2.6 x0.8in Item Weight: 103g / 3.7oz Package includes: 1 x Transistor Tester Details pictures: Click here for more deals M328 Multifunctional LCD Backlight Transistor Tester Diode Thyristor Capacitanc M328 Multifunctional LCD Backlight Transistor Tester Diode Thyristor Capacitanc