Biasing neeeds to be diffrent with a bjt probably diffreng diodes, also i can use one of these computer power supply inductors.
Adding two transistors more (amp from message #322) is much better. Also two 12V/10W lamps in parallel, but best solution is inductor loaded BJT. All this is just a simulation, not a working amp yet.
This one is like upper half from Hiraga's Le Monstre, nothing new.
This one is like upper half from Hiraga's Le Monstre, nothing new.
i built a lighbulb amp with a halogen bulb and its really loud even though its biased the wrong way
Cumbb made some things that were loud enough and worked at least for a while. With a lot worse engineering principles than using a light bulb as a class A collector/drain load.
i heard that we should stop talking about him, also nelson pass has a lighbulb amplifier of his own
My point was simply that far worse things have been suggested. And hey, you’ve got a built in dim bulb in case you exceed the SOA of your mosfet, or if you opt for germanium and it runs away on you.
Experimenter’s D-light.
Experimenter’s D-light.
I will try later this original Pass De-lite, just found these 300 watter 120 volts light bulbs and they are huge. McMaster-carr still sells some 264W bulbs (made in China) these older 300 Watter are made in Mexico.
My point was to try what can be done with one jfet and bjt with cheap automotive bulb and it was not good , so there is a reason to use more trannies. This four transistor version with inductor load behaves quite well in simulation. Could be useful if ready some day later.
My point was to try what can be done with one jfet and bjt with cheap automotive bulb and it was not good , so there is a reason to use more trannies. This four transistor version with inductor load behaves quite well in simulation. Could be useful if ready some day later.