allanvv
Advanced Member level 4
Is there a simple way to get a fixed DC gain in the range of 5-8 with just a single transistor or maybe two? I'm trying to convert a 0-3.3V DC analog signal into approximately 0-12V with as few components as possible, and I don't need high accuracy.
I tried adding a feedback resistor from the collector output back to the base but it doesn't help any. The gain seems to be proportional to the hfe of the transistor which apparently can have huge variation.
I tried adding a feedback resistor from the collector output back to the base but it doesn't help any. The gain seems to be proportional to the hfe of the transistor which apparently can have huge variation.