wuchy143
Member
Hi All,
I have a variable voltage amplifier which takes in 0-5v and outputs ~6.1V - 10.2V depending on the 0-5v input. I've simmed it. It works and I"m happy with it. For example you input 0 volts you get 6.1 volts out of the circuit. Or if you input 5v you get 10.2 volts out of the circuit. It's a linear relationship.
I would like to be able to provide more current than my amplifier can handle but still keep the same voltage swings. I'd like to drive 250mA maximum for my variable 6.1v - 10.2 volt signal.
I've never done a circuit like this and upon searching I see a darling ton pair might work for me. Thing is how do I keep my voltages to stay the same? There are also chips I could just, "buy" and they will do what I want but I want to try and find a more creative way of doing it and perhaps cheaper.
Any thoughts or ideas I could try?
Attached is what I have so far.
I have a variable voltage amplifier which takes in 0-5v and outputs ~6.1V - 10.2V depending on the 0-5v input. I've simmed it. It works and I"m happy with it. For example you input 0 volts you get 6.1 volts out of the circuit. Or if you input 5v you get 10.2 volts out of the circuit. It's a linear relationship.
I would like to be able to provide more current than my amplifier can handle but still keep the same voltage swings. I'd like to drive 250mA maximum for my variable 6.1v - 10.2 volt signal.
I've never done a circuit like this and upon searching I see a darling ton pair might work for me. Thing is how do I keep my voltages to stay the same? There are also chips I could just, "buy" and they will do what I want but I want to try and find a more creative way of doing it and perhaps cheaper.
Any thoughts or ideas I could try?
Attached is what I have so far.