3pcs lm7809 dc ac

Buy 3pcs LM7809 DC/AC 12-24V to 9V DC Output Three Terminal Voltage Regulator Power for R207.67

FAST AFFORDABLE COURIER SHIPPING TO SOUTH AFRICA 3pcs Mini DC 4.5V To DC 35V 5A 90W DC Motor PWM Speed Controller Module Speed Regulator Adjustable Specifications: Operating voltage: DC4.5V-35V Output current: 0-5A Output power: 90W (max) Quiescent current: 7uA (standby) PWM duty cycle: 1% -100% PWM frequency: 20khz Size: 30mm x 26mm x 14mm Precautions: -DC motor governor input is DC, can not directly connected to the AC (for example: home 220V AC), otherwise it will burn! -DC power supply positive and negative terminals do not reverse, otherwise the governor may be damaged. -The motor can be positive or negative, when the direction of operation and expectations do not match, you can adjust the line order to change the direction. -Adjust the potentiometer knob to change the governor output duty cycle, the motor speed changes. Package Included: 3 x PWM DC Motor Speed Controller 3pcs Mini DC 4.5V To DC 35V 5A 90W DC Motor PWM Speed Controller Module Speed Regulator Adjustable 3pcs Mini DC 4.5V To DC 35V 5A 90W DC Motor PWM Speed Controller Module Speed Regulator Adjustable

Buy 3Pcs AC-DC Isolated AC 110V / 220V To DC 3.3V 800mA Constant Voltage Switch Power Supply Converter M for R326.00

Descriptions: The power supply is isolated industrial grade built-in power module with temperature protection, overcurrent and short circuit full protection. Features: AC85 - 264V or DC110 - 370V wide voltage input DC 3.3V(+/ -0.2V) 800mA isolated output Input Current: 0.0273A/115VAC 0.014A/230VAC Input surge current: 10A (230VAC) Frequency range: 50/60 Hz Operating Temperature: -30 - 70 ??/span> Relative humidity: 20%- 90% Rated power: 2.6W Module size: 4.0*2.3*2.3cm Package included: 3 x AC-DC Isolated AC 110V / 220V To DC 3.3V 800mA Constant Voltage Switch Power Supply Converter Module

Specifications: 1. Onboard TDA2030A audio power amplifier chip. 2. Mono 18W power amplifier circuit design. 3. Socket onboard horn. 4. The onboard 10 k adjustable resistance, can adjust the volume of the amplification. 5. The onboard power light. 6. Chip has lead to the main pin, can directly input audio signal. 7. Working voltage: 6 - 12V. 8. Board size: 33 x 25 x 23(mm) Package included: 3 x TDA2030A Audio Amplifier Board Module

3pcs AC-DC 12V 0.5A 6W Switching Power Bare Board For LED Stage Light AC 100-240V To DC 12V Description: 1. Input voltage: AC 100V-240V 50-60Hz2. Output voltage: DC 12V3. Output current: 500ma4. Output power: 6W5. Size: 5.5 x 3.5 x 1.9cmPackage included:3 x AC-DC 12V 500ma 6W switching power module

3Pcs 15W TDA7297 Dual-Channel Amplifier Board For Arduino Features: AC / DC, 2.0 / dual channel / stereo,12V/2A when using, the output power of 15W +15 W, peak up 25W +25 W Can be accessed by two 4-8Ω 10-50W speakers A large volume of small size High signal to noise ratio Upgraded version of the radiator, wider and thicker, better cooling effect Fit for Bookshelf speakers, CRT televisions, radios, and other small amplifiers Specifications: 1. Working voltage: DC 9-15V 2. Power: 15W +15 W 3. Maximum power:30W+30W 4. Output Impedance: 4-8Ω Package included: 3 x TDA7297 Version Amplifier Boards

3Pcs 5V 1 Channel Level Trigger Optocoupler Relay Module For Arduino Description: The module uses genuine quality relay, normally open interfaces Using SMD optocoupler isolation, driving ability, stable performance The module can be high or low by a jumper setting trigger Fault-tolerant design, even if the control line is broken, the relay will not operate The power indicator (green), the relay status indicator (red) The interface design of human nature, all interfaces are available through a direct connection terminal leads, very convenient Specification: Maximum load: AC 250V/10A, DC 30V/10A Trigger current: 5mA Working voltage: 5V Module size: 50 x 26 x 18.5mm (L x W x H) Four mounting bolts holes, diameter 3.1mm Module interface: DC+: positive power supply (VCC) DC-: negative power supply (GND) IN: can be high or low level control relay Relay outputs: NO: normally open relay interface COM: Common Interface Relays NC: normally closed relay interface High and low level trigger options: It is low level trigger when jumper connect to LOW pin It is high level trigger when jumper connect to HIGH pin Package included: 3 x 1 Channel H/L level trigger optocoupler relay module

FAST AFFORDABLE COURIER SHIPPING TO SOUTH AFRICA Descriptions: The power supply is isolated industrial grade built-in power module with temperature protection, overcurrent and short circuit full protection. Features: AC85 - 264V or DC110 - 370V wide voltage input DC3.3V(+/ -1%) 1A isolated output Input Current: 0.5mA/115VAC 0.25mA/230VAC Input surge current: 10A (230VAC) Frequency range: 47-63Hz Operating Temperature: -30 - 70 ￢ﾄﾃ Relative humidity: 20%- 90% Rated power: 3.5W Output efficiency: 61% Module size: 5.1*2.3*1.8cm Package included: 3 x AC-DC 3.5W Isolated AC 110V / 220V To DC 3.3V 1A Switch Power Supply Converter Module 3Pcs AC-DC 3.5W Isolated AC 110V / 220V To DC 3.3V 1A Switch Power Supply Converter Module 3Pcs AC-DC 3.5W Isolated AC 110V / 220V To DC 3.3V 1A Switch Power Supply Converter Module 3Pcs AC-DC 3.5W Isolated AC 110V / 220V To DC 3.3V 1A Switch Power Supply Converter Module

FAST AFFORDABLE COURIER SHIPPING TO SOUTH AFRICA Features: LC 5A Over-current protection Sensor module uses current transformer to collect the AC signal to achieve the relay over-current signal output within 0-5A. Relay pull while over-current, relay released while not over-current. Users can use the relay COM, NC, NO three ports to control the external circuit on and off, in order to achieve over-current protection. Functions: -Current detection resolution can change the parameter of resistance parameters; -Output over-current switching signal output; -Over-current signal setting critical point adjustable, Specifications: Operating voltage: DC12V Operating current: Operating frequency range: 20Hz ~ 400Hz Output mode: switch signal output Maximum detection wire diameter: 5.2mm Mounting hole: hole diameter is 3mm, hole distance is 52.5mm Operating environment: -40 ￢ﾄﾃ ~ +85 ￢ﾄﾃ The current detection range:AC0.3A-5A Board size: 38 * 44mm The Board Description: VCC: Operating voltage positive; GND:Operating voltage negative; NO: Normally open, the relay pulls before the NO and COM disconnect, short-circuit after the suction; COM: common, relay common interface; NC: Normally closed, the relay before the NC and COM short-circuit, pull off after. Using Instructions: By setting the potentiometer to set the overcurrent protection point, the clockwise adjustment reduces the detection current. As bellows: 1. Measured the wire through the current transformer, connect VCC and GND to DC12V power supply; 2. Adjust the potentiometer, when you hear the sound of the relay pull (can be measured with a multimeter COM and NO whether was turned on, if connected to the relay means activated), then reduce or cut off the current flowing that through the tested wire, if the relay release at this time that over-current protection point has been identified (available to multimeter COM and NC measurement whether is connected, if connected to the relay means been released); 3. When reduce or cut off the current flowing through the wire, the relay is not released, will still need to continue to adjust the potentiometer to find the over-current protection point. Package Included: 3 x 5A 12V Relay Module 3Pcs DC 12V 5A Overcurrent Protection Sensor Module AC Current Detection Relay Module Switch Output 3Pcs DC 12V 5A Overcurrent Protection Sensor Module AC Current Detection Relay Module Switch Output 3Pcs DC 12V 5A Overcurrent Protection Sensor Module AC Current Detection Relay Module Switch Output

Buy 3Pcs AC-DC 3.5W Isolated AC 110V / 220V To DC 3.3V 1A Switch Power Supply Converter Module for R327.00

Descriptions: The power supply is isolated industrial grade built-in power module with temperature protection, overcurrent and short circuit full protection. Features: AC85 - 264V or DC110 - 370V wide voltage input DC5V(+/ -1%) 2A isolated output Input Current: 0.5mA/115VAC 0.25mA/230VAC Input surge current: 10A (230VAC) Frequency range: 47-63Hz Operating Temperature: -30 - 70 ??br />Relative humidity: 20%- 90% Rated power: 10W Output efficiency: 75% Module size: 6.6*3.0*2.2cm Package included: 3 x AC-DC 10W Isolated AC 110V / 220V To DC 5V 2A Switch Power Supply Converter Module

Feature: We all know what an AC dimmer is; for those who don’t, it’s a kind of a circuit which can control the amount of AC voltage to be given to any device. You can see them in a fan regulator or a light dimmer switch. It's good for a smart home if you need to turn the lighting on and off slowly. The lamp is slow damped, this creates a pleasant effect. Also can control AC/DC motor, electric pump, tools. Pulse Skip Modulation: Another way of doing this is by Pulse Skip Modulation. With PSM, one or more full cycles (sinuswaves) are transferred to the load and then one or more cycles are not. Though effective, it is not a good way to dim lights as there is a chance for flickering. Though it might be tempting, in PSM one should always allow a full sinuswave to be passed to the load, not a half sinus as in that case the load will be fed factually from DC which is not a good thing for most AC loads. The difference between leading edge cutting and PSM is mainly in the software: in both cases one will need a circuit that detects the zero crossing and that can control a triac. A circuit that can do this is easy to build: The zero crossing is directly derived from the rectified mains AC lines – via an optocoupler of course- and gives a signal every time the wave goes through zero. Because the sine wave first goes through double phased rectification, the zero-crossing signal is given regardless whether the sinus wave goes up through zero or down through zero. This signal then can be used to trigger an interrupt in the Arduino. Package includes: 3 x AC Light Dimmer Module

Buy 3pcs AC 100-240V to DC 12V 5A 60W Switching Power Supply Module Driver Adapter for R461.39

Buy 3pcs AC-DC 12V 2A Switching Power Module Monitor Stabilivolt Voltage Regulator AC 100-240V To DC 12V for R280.00