We will settle your problem as soon as possible. If you want to know more information, please contact the customer service. In addition, the transit time depends on where you're located and where your package comes from. Shipping from your local warehouse is significantly faster. Shipping time: The time for your item(s) to tarvel from our warehouse to your destination. This includes preparing your items, performing quality checks, and packing for shipment. Processing time: The time it takes to prepare your item(s) to ship from our warehouse. Total delivery time is broken down into processing time and shipping time. The total delivery time is calculated from the time your order is placed until the time it is delivered to you. The total time it takes to receive your order is shown below: You can choose your preferred shipping method on the Order Information page during the checkout process. Once your order is shipped, you will be emailed the tracking information for your order's shipment. When you order from, you will receive a confirmation email. It can be controlled directly by Micro-controller (Raspberry, Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic) Currentġ Pcs x 8 Channel Relay Module with Opto-Isolator Protection (5V DC) This is a 5V 8-Channel Relay interface board, Be able to control various appliances, and other equipment with large current. User-friendly interface design, all interfaces can be connected directly through the terminal leads, very convenient Power indicator (green), relay status indicator (red).Ħ. Fault-tolerant design, the relay will not operate even if the control line is destroyed.ĥ. The module can trigger high or low by jumper setting.Ĥ. SMD optocoupler isolation, strong drive capability and stable performance.ģ. This module uses a genuine quality relay normally open interface.Ģ. (D2 and D4 simply stop 9v reaching LED output drivers, and stops said driver from trying to 'charge' the 9v battery which is at a lower potential.8 Channel Relay Module with Opto-Isolator Protection (5V DC)ġ. The contacts close, supplying AC to the LED driver, which then powers circuit as SW1 is released. This switches on LED via FET, and opto transistor turns on relay. Using 8 -way 817 optocouplers, to achieve the control signal and the control signal isolation, you can directly use the microcontroller or other devices IO port to achieve voltage. The onboard with 8-Channel 817 are independent, so they can achieve different voltage control at the same time. When switch is closed, it connects 9v to circuit. This is a PC817 8 Channel Optocoupler Isolation Board. Simulate this circuit – Schematic created using CircuitLab So what to change? The LED resistor? The gate resistor? Add another transitor to the opto emitter with a pair of resistor on opto output? Using SMD OPTOCOUPLER isolation, driving ability, stable performance trigger current 5mA 3. I measured the voltage from +ve (12v) to collector of opto, and only got 7.5v. IN THEORY, (I've yet to reach that stage) the high output of the 4017 into the gate should make the voltage flow low enough to de-energise the relay.īut I still can't get the relay to turn on. Thus, I installed a p-channel FET wired to ground via a 1.2meg resistor. That's when I discovered the 4017 will output a voltage to light an LED. So I installed an opto-isolator, connecting the LED to the output of the 4017, ie "on" until the ouput goes high. Long story short, I want to have a relay turn OFF when the output of a 4017 goes high.
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