Variable Circuit Breaker for Circuit Development?

[JacobEdward]

I'm curious if there exists such a device that acts like a circuit breaker (a fuse that switch's off at a certain voltage or current), but is adjustable like a potentiometer and can be rated down to low voltages and currents like 1V to 60V for circuit development purposes?  That would be pretty cool.

[PeterFW]

I think that i migh not have understood the question because you describe a common lab power supply.

[JacobEdward]

I think that i migh not have understood the question because you describe a common lab power supply.

A lab power supply would essentially be the other side of the coin, vary the voltage instead of breaking the circuit.

[PeterFW]

A lab power supply would essentially be the other side of the coin, vary the voltage instead of breaking the circuit.

A decent power supply can disable the output when a set load is reached.
You can set the power supply to 650mA and when the target circuit draws above 650mA it will shut down.

Same for the output voltage, if the output voltage in constant current mode gets above the set voltage it will shut down.

[JacobEdward]

A lab power supply would essentially be the other side of the coin, vary the voltage instead of breaking the circuit.

A decent power supply can disable the output when a set load is reached.
You can set the power supply to 650mA and when the target circuit draws above 650mA it will shut down.

Same for the output voltage, if the output voltage in constant current mode gets above the set voltage it will shut down.

What if you need to develop something with more voltage sources than your power supply offers and you don't want to buy/build another power supply?

[T3sl4co1l]

I've got something like that,
http://seventransistorlabs.com/Fuse/

Tim