Contents
How do you short circuit a circuit?
Examples. A common type of short circuit occurs when the positive and negative terminals of a battery are connected with a low-resistance conductor, like a wire. With a low resistance in the connection, a high current will flow, causing the delivery of a large amount of energy in a short period of time.
Does a short circuit make a sound?
This means that the power level has to be very high, and become high very quickly. Another possibility, depending on what you short it with, is the solid short heating up very fast and expanding, eventually rupturing and causing a boom sound. Again, this requires a high power and rate of power increase.
Can a short circuit be used in a power supply?
This instructable is about a universal short circuit protection that I’ve designed to use in bench power supplies. I’ve designed it to fit in most power supplies circuits. In order to this circuit fit in your bench power supply, you will need to do some calculations, but don’t worry, I’ll explain everything on the next steps.
How does the heart of a short circuit work?
The “heart” of this circuit is an operational amplifier (op amp) configured as a comparator (stage 2). The way it works is really simple, you just need to follow this rule: If the voltage on the non-inverting output is higher than the inverting output, then the output is set to “high” level.
Why do we need an amplifier in a short circuit?
As the voltage drop on the resistor in series with the power supply is too small, we need to amplify it a little bit because some op amps are not too accurate when comparing low voltages like 0,5 volts or lower. And that’s why the first stage (stage 1) of this circuit is an amplifier using another op amp.
How to disarm a PNP transistor after a short circuit?
The PNP transistor on stage 3 just act like a seal to keep the relay turned on after the short circuit so you can press a button to disarm it. Why I didn’t use the relay itself to do this? It’s because the relay is too slow to do it.