Jaw174
New Member
Hello,
I am building a simple latching relay circuit. what transistor out ther will allow me to switch a 5v relay from a 1v, very low current signal? i am guessing that i need a transistor with a very high gain...
the relay will be passing 5volts at 2 amps, and activated at 5 volts.
The outut is from a cellphone, spliced off the vibrate motor.
i am getting a peak of .03 amps - at .02amps continious.
basic circuit:
**broken link removed**
i would be modifying this so that the relay would latch and stay "on" using a line from 5v to the signal-in wire when switched to the Normaly open side. of course if i do that, the max voltage on the transistor base has to be at least capable of 5
Ideas on what transistor to use?
I am building a simple latching relay circuit. what transistor out ther will allow me to switch a 5v relay from a 1v, very low current signal? i am guessing that i need a transistor with a very high gain...
the relay will be passing 5volts at 2 amps, and activated at 5 volts.
The outut is from a cellphone, spliced off the vibrate motor.
i am getting a peak of .03 amps - at .02amps continious.
basic circuit:
**broken link removed**
i would be modifying this so that the relay would latch and stay "on" using a line from 5v to the signal-in wire when switched to the Normaly open side. of course if i do that, the max voltage on the transistor base has to be at least capable of 5
Ideas on what transistor to use?