Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
The goal is to create a circuit that activates a solenoid when the supply power is cut, using power stored in a capacitor. So far the issue I have been running into is that the relay is energized by the capacitor when power is cut, and the solenoid on NC remains stationary. If the ground for the...
Hi,
I need the LED to light up every time the "connecting circuit'" is connected to the main power supply. In option A the LED would never turn off and in option B the LED causes a voltage drop over the pogo pin connectors. Option B causes the voltage to drop from 5V to 2.66V, which is too...
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