what does bypassing a circuit with a wire mean?

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So context, I’m a maintenance engineer in training and I’ve been looking up tool that will be handy for various jobs etc. One common suggestion is a piece of wire to bypass a circuit.

What does this mean? I’d ask my supervisor but I’m not sure whether that’s something we would do.

In: Engineering

8 Answers

Anonymous 0 Comments

Example:

Say you have an elctronic locking bolt on a door. To retract the bolt and unlock the door, you have to pass an electrical current through a servo that’s connected to it. The circuit for that servo is controlled by a transistor that’s connected to a computer chip. Normally the transistor would switch on or off, just like a light switch when signaled by the chip that’s controlling it and allow current to pass through the transistor, completing the circuit and activating the servo. The chip might be on a timer, attached to a keypad, etc.

Now, let’s say that chip is broken, and can’t send a signal to the transistor, but you still need to get the door open. If you take a piece of wire, and connect it to the terminals of the transistor, you will create a new circuit path that allows the current to bypass the transistor entirely and go directly to the servo, this will complete the circuit, activate the servo, and retract the locking bolt.

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