Solid State Guitar Amp Forum | DIY Guitar Amplifiers
Solid State Amplifiers => The Newcomer's Forum => Topic started by: saturated on September 27, 2025, 02:01:08 AM
I wanted to set up a circuit and see what happens.
Previously I was trying to do something different and after gathering a few components my calculations showed a voltage drop across the collector resistor of 23.9 when Vcc was 24 volts :grr
So today I wanted to put together a circuit with a lower base resistor and see 🙈 if it would melt or blow up the transistor I had no idea what it would do.
Here is the schematic
IMG_20250927_003005623 (1).jpg
So I put it together and dialed up the voltage and kept watching for smoke but really nothing bad happened (I don't think) :loco
Also I measured emitter current
IMG_20250927_002925935 (1).jpg
And here are my results
IMG_20250927_003743405 (1).jpg
One thing I am noticing is the lower beta value seems iirc in all the book experiments i did beta was about 170 xP
Seems like the base emitter voltage drop looks good so maybe I was nowhere near Chernobyl territory idk and that wasn't what I was trying to do. I tried to feel if the transistor was getting warm/hot but it's tiny and I couldn't really tell.
My main interest was with the suspected huge voltage drop across the collector how much was gonna be left for the emitter resistor :grr