Ok!
It`s just so easy put together with few parts, that it would be fun to build!
Just thinking out loud here...:
I`m having 300VA trafo 2x15v sec. so can also get out 38v.
Find that the original 110v 300w bulb is 40ohm.
Article says 12v on Drain for Mosfet -> 28v over bulb? -> Bias 0,7A? (With 40v PSU)
Transforming into two 24v bulbs in series they will need to be about 72w each?
Am I on deep water or....?
Can I use the 300VA trafo or should I forget it all?
It`s just so easy put together with few parts, that it would be fun to build!
Just thinking out loud here...:
I`m having 300VA trafo 2x15v sec. so can also get out 38v.
Find that the original 110v 300w bulb is 40ohm.
Article says 12v on Drain for Mosfet -> 28v over bulb? -> Bias 0,7A? (With 40v PSU)
Transforming into two 24v bulbs in series they will need to be about 72w each?
Am I on deep water or....?
Can I use the 300VA trafo or should I forget it all?
I am running an IRFP150 at 1,0 amp and 10 volts D-S, with only 1,0 ohm source degeneration, and it works just fine. I don´t get more then 1,7 watts from the amp, but with very efficient BIB loudspeakers it enough for me.
The amp sounds very clean and precise. I can´t hear any distortion or lack of definition.
regards,
Johannes
The amp sounds very clean and precise. I can´t hear any distortion or lack of definition.
regards,
Johannes
My transformer is a 10 + 10 volt secondaries (160 VA), rectified it gives 28 volts. I use a capacitance-multiplicator that takes the voltage down to 25,2 volts over the amp circuit. There is a simple 15 ohm power resistor as drain-load (no constant current source).
regards,
Johannes
regards,
Johannes
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Amplifiers
- Pass Labs
- zen lightenment!