BBQTime
New Member
Hi everyone
This is what I'm looking to do....I have seen somewhere but can't now locate on google a 2 or 3 transistor circuit that when it receives a 12v current via a 1k base resistor it will start conducting and switch the other transistor / transistors off thus disconnecting the supply to the given circuit....
Hope I explained it properly sort of a "normally on" transistor and a "dump" transistor obviously I just want to disconnect the supply to a 2nd circuit controlled via this one,the circuit I want to switch off uses around 125 mA
Ps I don't want to use a relay to do this and if I remember correctly the transistors used were PNP 2n2222 I think?...I posted on another forum so I'm looking for other ideas.
Thanks
This is what I'm looking to do....I have seen somewhere but can't now locate on google a 2 or 3 transistor circuit that when it receives a 12v current via a 1k base resistor it will start conducting and switch the other transistor / transistors off thus disconnecting the supply to the given circuit....
Hope I explained it properly sort of a "normally on" transistor and a "dump" transistor obviously I just want to disconnect the supply to a 2nd circuit controlled via this one,the circuit I want to switch off uses around 125 mA
Ps I don't want to use a relay to do this and if I remember correctly the transistors used were PNP 2n2222 I think?...I posted on another forum so I'm looking for other ideas.
Thanks
Last edited: