could be used but I found no simple circuits. My first thought was just to connect a series current limiting resistor and LED to the cathode so that the LED would light when the reference ...

The first video is a simple circuit with ... features the same resistor/switches/LEDs, this time in a parallel circuit. Turning on the first switch makes the first LED light up, and the second ...

It allows both polarities to control the motor — however if you do it with just plain old switches or relays, you could short the circuit if you try going in both directions at once!

Older designs relied on simple resistors to limit LED drive current, but designing an LED circuit based on the typical forward ... Figure 1 illustrates a coordinated protection scheme for switch-mode ...

A simple circuit is a chain of different parts with wires and switches which allows electricity to flow around. All electrical appliances use circuits. For electricity to flow correctly ...

R 1 limits the base current of Q 1 when S 1 is closed. S 1 can be a manual switch, a relay contact, an optocoupler, or a transistor. If you close S 1, Q 1 turns on, and the motor runs. Figure 1 This ...