Hi chaps,
I am wanting to make a circuit that I can "blow" on purpose - think of it as an expiry mechanism. I don't want something to reset (non-reset type fuse).
I was just thinking I could use an LED and drive the current high, but Ive noticed that the LED is still in-circuit after driving it well over its rated forward current limits.
What other devices could I use as a "fuse" because I don't want a Fuse as a component (and even then its hard to buy a cheap one that will blow at 50mA.
The voltage drop across the component needs to be either around 2.5V or 0.5V, and it should be able to handle current through the component up to 50mA, but will go open circuit (blow) when driven above 50mA (up to 100mA).
I was considering BJTs and FETs.... any advice would be grand
Cheers.
I am wanting to make a circuit that I can "blow" on purpose - think of it as an expiry mechanism. I don't want something to reset (non-reset type fuse).
I was just thinking I could use an LED and drive the current high, but Ive noticed that the LED is still in-circuit after driving it well over its rated forward current limits.
What other devices could I use as a "fuse" because I don't want a Fuse as a component (and even then its hard to buy a cheap one that will blow at 50mA.
The voltage drop across the component needs to be either around 2.5V or 0.5V, and it should be able to handle current through the component up to 50mA, but will go open circuit (blow) when driven above 50mA (up to 100mA).
I was considering BJTs and FETs.... any advice would be grand
Cheers.