Hi Aman
greetings in class d no one uses 2sc5200 chokes r for dc filtering
hows everything
warm regards
andrew lebon
greetings in class d no one uses 2sc5200 chokes r for dc filtering
hows everything
warm regards
andrew lebon
This amp use class D circuit in rail instead class H step driver, it's class E (YAMAHA) or TD (LabGrupen).
CROWN XTi is not so complex
CROWN XTI-SERIES Service Manual free download, schematics, eeprom, repair info for electronics
no bias
Hi , could someone please help I finished one channel of h900 and iot went great but on the other one i have no bias voltage on both the PNP and NPN side of the output transistors.It shows aproximetly 0v I guess it should be something like 0.52 volts on the bases on the output trannies.
If someone of you could point me in the right direction.
Thanks🙂
Hi , could someone please help I finished one channel of h900 and iot went great but on the other one i have no bias voltage on both the PNP and NPN side of the output transistors.It shows aproximetly 0v I guess it should be something like 0.52 volts on the bases on the output trannies.
If someone of you could point me in the right direction.
Thanks🙂
bias
Hi again, well yesterday I got my readings wrong.The first channel do have 0.52v bias on output transistor bases, both sides.
The other channel shows like 0.2 volts on PNP and 0.18 v or something like that on the NPN side of the output transistors.Is this ok? should it be good or should I check something for being wrong?
Also do this amplifier has the signal ground and PSU ground tied together or are they seperate?
because all standart amplifiers have the signal and psu grounds together, I assume this should do the same but I cannot see it anywhere in the schematics shown.
Thank you for helping,
regards, Gīrts.
Hi again, well yesterday I got my readings wrong.The first channel do have 0.52v bias on output transistor bases, both sides.
The other channel shows like 0.2 volts on PNP and 0.18 v or something like that on the NPN side of the output transistors.Is this ok? should it be good or should I check something for being wrong?
Also do this amplifier has the signal ground and PSU ground tied together or are they seperate?
because all standart amplifiers have the signal and psu grounds together, I assume this should do the same but I cannot see it anywhere in the schematics shown.
Thank you for helping,
regards, Gīrts.
bias
on the first channel the voltage across multiplier is 1.8 v on the second which is the faulty one the voltage there is like 0.9v over the mje 340.
what do you mean by the driver? I guess a transistor but which one?
Also , a stupid question but do I wire the signal ground to the powersupply ground in this amp or not, I'm a bit confused as usually signal gnd is wired to psu gnd.
on the first channel the voltage across multiplier is 1.8 v on the second which is the faulty one the voltage there is like 0.9v over the mje 340.
what do you mean by the driver? I guess a transistor but which one?
Also , a stupid question but do I wire the signal ground to the powersupply ground in this amp or not, I'm a bit confused as usually signal gnd is wired to psu gnd.
hi apex sir,
can u tell me, what is the bias voltage across emitter resistor for h900 tef with 8pair,
if i put bias preset , what is the value preset should i use?
can u tell me, what is the bias voltage across emitter resistor for h900 tef with 8pair,
if i put bias preset , what is the value preset should i use?