Hi
I need to feed the output of one stage to the input of the following, but the DC voltage levels do not match ( sometimes they do match coincidentally and all is good ). Of course a capacitor solves the problem nicely, but it introduces phase shifts and it is not down to DC.
I have tried to devise my own voltage level shifter but at best it requires extremely accurate biasing or my simulation software refuses to deal with it. I tried to use two transistors in series (cascade ?).
Would anyone be able to suggest a simple circuit I could use as a starting point for learning purposes?
The parameters are:
Input:
DC and AC at audio range (ie no capacitors)
Voltage range from 0V to X Volts, where X < Vs (Vs is supply voltage)
Source impedance - relatively high, eg 10K, 20K, 50K
Thanks
I need to feed the output of one stage to the input of the following, but the DC voltage levels do not match ( sometimes they do match coincidentally and all is good ). Of course a capacitor solves the problem nicely, but it introduces phase shifts and it is not down to DC.
I have tried to devise my own voltage level shifter but at best it requires extremely accurate biasing or my simulation software refuses to deal with it. I tried to use two transistors in series (cascade ?).
Would anyone be able to suggest a simple circuit I could use as a starting point for learning purposes?
The parameters are:
Input:
DC and AC at audio range (ie no capacitors)
Voltage range from 0V to X Volts, where X < Vs (Vs is supply voltage)
Source impedance - relatively high, eg 10K, 20K, 50K
Thanks