Quote:
Originally Posted by Herald1360
The 741could be used but wouldn't be ideal, especially if you're looking for high input impedance. A FET input type like TL071 would be better.
A simple bipolar supply for the opamp can be made with two diodes and two capacitors two provide + and - half wave rectified supplies of about 7V each. 1N4148 and 100uF should do.
You could get cunning and rewire the old chassis to use the IF valve, triode connected, as your preamp/buffer......
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Thanks - The IF Valve pre-amp sounds like an interesting option, but probably a little bit too advanced for me. I think I will get the system working first and see where the project takes me.
A simple FET system would probably be ideal. All I really need is something to increase the input gain up a little bit, to allow the valve section of the pre-amp to break-up a bit and distort. Again, something that can wait until I have got the basics working.
Quote:
Originally Posted by ms660
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Nice one - I could spend all day buying stuff from your store. I have stuck to the essentials... for now.
