Kilowatt said:That's a really wierd amp. What's the THD? Quiescent current? etc. etc.?
Kilowatt.
Try this link.
http://perso.wanadoo.fr/jm.plantefeve/sche.html
Use this web link
http://babel.altavista.com/
then paste the original link of the web and select from French to English.
Hope this help

http://babel.altavista.com/
then paste the original link of the web and select from French to English.
Hope this help
details
THD+noise < 0.05%.
Quiescent current is 200 mA per transistor, 400 mA for this circuit like precised Kilowatt.
With 2*20 000µF by chanel, it's a good supply.
If you make this amplifier some modification should be add in a target to not have problems with the FETs input stage.
With this diagram, if it uses with CD player, you don't really need
preamp.
Add 470 Ohms resistor in serial with input, make an inductor about 1µH at the output. (10 turns).
BUZ 900 and 905 (DP always) have not same Crss, capacitor
between gate and drain, so a 39pF should be add between gate and drain of each BUZ 900DP (Ntype).
More, 2N.... are mounting with 50°C/w dissipator (or less of course).
Two last word concerning ELEKTOR amps. They are good amps but the sound is not as soon as good like they electrical features.
I talk about Hexfet 60, nonante and the discret. Otherwise, the LFA 150 is very very good.
Bye.
Special thanks to Sear Pass.
THD+noise < 0.05%.
Quiescent current is 200 mA per transistor, 400 mA for this circuit like precised Kilowatt.
With 2*20 000µF by chanel, it's a good supply.
If you make this amplifier some modification should be add in a target to not have problems with the FETs input stage.
With this diagram, if it uses with CD player, you don't really need
preamp.
Add 470 Ohms resistor in serial with input, make an inductor about 1µH at the output. (10 turns).
BUZ 900 and 905 (DP always) have not same Crss, capacitor
between gate and drain, so a 39pF should be add between gate and drain of each BUZ 900DP (Ntype).
More, 2N.... are mounting with 50°C/w dissipator (or less of course).
Two last word concerning ELEKTOR amps. They are good amps but the sound is not as soon as good like they electrical features.
I talk about Hexfet 60, nonante and the discret. Otherwise, the LFA 150 is very very good.
Bye.
Special thanks to Sear Pass.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Amplifiers
- Solid State
- french DIY amps