QUASI Amplifier for Beginners

[Ranchu32]

Hello Apex

Do you have a very simple design like this, but with quasi MOSFET output stage?

 

[masood]

dear sir, what is the volts,amp. and wattage of 2sa1941 transistor?

 

[djk]

http://www.toshiba.com/taec/components2/Datasheet_Sync/201011/DST_2SA1941-TDE_EN_7669.pdf

 

[masood]

i want some question answer:-
1.what is quiscent current and how it is measured?
2.what is offset control?or current?
3.what is vas?
4.what is bias?and how it is set at mosfets gate?
thanking u

 

[masood]

Quasi complementary amplifier based on old Dynacord. For begginers Class B without adjust.

dear apex,
i want to use transistor 2sc5200 in place of 2n3773.and what modification will be made?thanking u yours ever

 

[apexaudio]

dear apex,
i want to use transistor 2sc5200 in place of 2n3773.and what modification will be made?thanking u yours ever

You can use 2SC5200 instead 2N3773 without modification,
Regards

 

[masood]

You can use 2SC5200 instead 2N3773 without modification,
Regards

in schematics 2 caps 2.2 and 100 micro farad
but in layout there is 1 and 47 micro farad what is right sir?

 

[masood]

B550 upgrade with 16A peak current limiter.

dear apex
plz its pcb also.

 

[masood]

dear apex,
why r u not answering me?regards

 

[masood]

Hi radio ,
I have search for you an better schematic , also tested one . I have done small changes for 2SC 5200 as finals .....🙂 I hope you like it .
Regards Alex.

dear alex,
what is the size of your pcb?thanks regard

 

[apexaudio]

in schematics 2 caps 2.2 and 100 micro farad
but in layout there is 1 and 47 micro farad what is right sir?

Any of them will be ok, regards

 

[masood]

dear apex
thanks.plz share pcb of B550 upgrade with 16A peak current limiter.
plz.regards uer truly

 

[masood]

dear apex
thanks.plz share pcb of B550 upgrade with 16A peak current limiter.
plz.regards uer truly

plz apex help me

 

[masood]

still going....

please enlighten me master 's of diyaudio

dear sir,
as yur image u use tip41,tip42 in place of mje340,mje350
tip volts are 55v where as mje voltage is 300 volts,
i also want to make this amplifier plz suggest me for hi-fi amplifier.thanking u.urs evr masood

 

[masood]

Quasi complementary amplifier based on old Dynacord. For begginers Class B without adjust.

dear apex,
as i saw ur circuit the diode4004 cathode is connected with fuse after input (65v).i means first input then fuse and after diode .put in pcb input is connected with diode catode, that position is in negatine supply diode .plz explain what is right.thanks regard

 

[masood]

RE-SIZED.
if anybody need PDF pls ask. I'll share.

dear wattania,
both are mje 350.is this right amplifier work properly.i think that is wrong

 

[masood]

Hi radio ,
I have search for you an better schematic , also tested one . I have done small changes for 2SC 5200 as finals .....🙂 I hope you like it .
Regards Alex.

dear alex,
i found your this circuit and pcb can i make this. please send me more details corrections etc. u are my ideal.if any one make this kit plz show .i will highly oblized thank u.yours ever masood

 

[masood]

plz apex help me

plz pcb

 

[masood]

plz share its pcb and circuit.thanking you yours masood

 

[masood]

Hi Mile!
I made this Quasi amplifier (picture below), but two things bother me: Why security diodes 1N4007 are connecting to the PCB in front of the fuses and why 0,33R/5W resistor is connected to the collector output transistor (2N3773), not the broadcaster?
Mile you do not need to make a correction?
Waiting quick response after I made ​​amplifier!
thanks and cheers

P.S.
Posto slabo mi ide engleski evo prevoda na Srbski:
Izradio sam ovaj Quasi Amplifier (slika dole), no muce me dve stvari: Zasto sigurnosne diode 1N4007 su povezane na PCB ispred osigurace i zasto otpornik 0,33R/5W je povezan na kolektor izlaznog tranzistora (2N3773 povezan na negativnoj grani), a ne na emiter??
Mile molimte odgovori na pitanja da ne treba da napravim korekciju?
Cekam brzi odgovor posto sam izradio pojacavac!!
Hvala i sve najlepse!

dear sir
would you plz share this pcb and circuit details,because it is different .
thanks your ever