I'm building this PSU.
Can I use 0,33R emiter resistors instead of 0,22 and which replacements can be used for the BD240/242 combo?
Yes 0,33R will be OK, there is no overcurrent limiter. MJE15030 and MJE15031 can be used instead BD241C and BD242C.
Apex,
Thanks,In some of this PSU schematic I see the use of two 12V zeners in some of 20V is this determined by how much rail voltage you have or want?
12v zeners is for rails about +/50v and 20v for rails about +/-80v
A40 CFA amplifier
First ,input two transistors must be paired . Minimum filter capacitors 20,000uF/63v needed per positiv and negativ rail .Voltage 55-0-55 for secondary transformer it's too big ,you need only 36-0-36 V ac or maximum 38-0-38Vac and 5 to 6 A. Use 25A rectifier bridges. .
Regards,Alex
First ,input two transistors must be paired . Minimum filter capacitors 20,000uF/63v needed per positiv and negativ rail .Voltage 55-0-55 for secondary transformer it's too big ,you need only 36-0-36 V ac or maximum 38-0-38Vac and 5 to 6 A. Use 25A rectifier bridges. .
Regards,Alex
SR200 amp ver 3.2
Sorry, I forgot to say that I 'm using ver 3.2 SR200 circuit pcb .
And I want to reach a maximum capacity of 200W / 8ohm per channel.
Thanks U.First ,input two transistors must be paired . Minimum filter capacitors 20,000uF/63v needed per positiv and negativ rail .Voltage 55-0-55 for secondary transformer it's too big ,you need only 36-0-36 V ac or maximum 38-0-38Vac and 5 to 6 A. Use 25A rectifier bridges. .
Regards,Alex
Sorry, I forgot to say that I 'm using ver 3.2 SR200 circuit pcb .
And I want to reach a maximum capacity of 200W / 8ohm per channel.
Sorry, I forgot to say that currently I 'm using version v3.2 SR200First ,input two transistors must be paired . Minimum filter capacitors 20,000uF/63v needed per positiv and negativ rail .Voltage 55-0-55 for secondary transformer it's too big ,you need only 36-0-36 V ac or maximum 38-0-38Vac and 5 to 6 A. Use 25A rectifier bridges. .
Regards,Alex
Dear alex mm and everyone,
I 'm using version v3.2 SR200.
How much power of Zener 15V? (0.5wat ?)
How much volt transformer is maximum for pcb if i use power supply non regulator?
And volt minimum of Capicitor:
- 100pF
- 470pF
- 22nF
if i use +-75vdc?
Thanks!!! Sorry, my english is very bad .
Regards, cuongdotvn
I 'm using version v3.2 SR200.
How much power of Zener 15V? (0.5wat ?)
How much volt transformer is maximum for pcb if i use power supply non regulator?
And volt minimum of Capicitor:
- 100pF
- 470pF
- 22nF
if i use +-75vdc?
Thanks!!! Sorry, my english is very bad .
Regards, cuongdotvn
Dear, still4giventest
Srorry!!! I don't understand.
Regards, cuongdotvn
Update
An externally hosted image should be here but it was not working when we last tested it.
Can I use this PSU 10 for a Class A amp like the F5?
Yes with outputs on heatsink.
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