After few weeks excelent operation, power transistor melts itself out of the solderings in board and does not work anymore. After resoldering it works again and no such problems, is it thermal design problem?
Second question, power is low at lower frequencies 87,5 - 88,5. What i should do ?
Question about 15W amplifer
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We are now equipping those amplifiers with a small fan, they did
run a little hot before, yes.
So do use a small fan to blow across the output transistor.
run a little hot before, yes.
So do use a small fan to blow across the output transistor.
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
It won't unless you really push it.
But still, a small PC style fan is welcome!
But still, a small PC style fan is welcome!
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
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- New registered user
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- Location: Kernersville NC
Smokin while broadcasting
I have a 15 watt booster, I had to resolder the power supply joints, due to heat, a month later, my booster went into complete disaster. It smoked real good, and Powersupply no longer works. I even had 2 fans on mine.
We were selling these units with built-in mains power supply only
in the very beginning, but it soon turned out that the transformers,
even though according to specifications good enough, were in fact
not suitable so we decided to use external power supply months
ago.
Boosters are now equipped with optional external power supply
or powered from other 12-15V DC power supply so this problem
was eliminated.
Additionally, they now have a fan above the output rf tranzistor
so things are cool.
in the very beginning, but it soon turned out that the transformers,
even though according to specifications good enough, were in fact
not suitable so we decided to use external power supply months
ago.
Boosters are now equipped with optional external power supply
or powered from other 12-15V DC power supply so this problem
was eliminated.
Additionally, they now have a fan above the output rf tranzistor
so things are cool.
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128