I stumbled into some great info here on the problems with these amps and hoping some guys are still around? I am trying to spec the problematic D11 diac on the daughter driver board for the PSU mosfets? It is now black and cannot read it.
If anyone has experience with these, I might have a few other questions.
If anyone has experience with these, I might have a few other questions.
Diacs.
BR100 and BR103 were the main two produced.
Made by Philips, they are a bi directional trigger and work similar to a low voltage neon.
When the voltage reaches the threshold voltage, they go short circuit for a split second, producing a pulse, used mainly in light dimmers and motor controllers.
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BR100/03 Datasheet pdf - BR100/03; Silicon Bi-directional Trigger Device - Philips
BR100 and BR103 were the main two produced.
Made by Philips, they are a bi directional trigger and work similar to a low voltage neon.
When the voltage reaches the threshold voltage, they go short circuit for a split second, producing a pulse, used mainly in light dimmers and motor controllers.
HTTP 301 This page has been moved
BR100/03 Datasheet pdf - BR100/03; Silicon Bi-directional Trigger Device - Philips
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I do understand what a diac is. I am more interested to know if someone has the proper spec for a replacement or the means to test is scrap amp? Someone has mentioned a DB6 which is a 60V trigger, and another mentioned a DB4, which is a 40V trigger. That will make a radical difference in an oscillator circuit.
Diacs are not used to oscillate.
The proper spec is included in my last post.
A DB6 is an Aston Martin!
Please enlighten me.
The proper spec is included in my last post.
A DB6 is an Aston Martin!
Please enlighten me.
Diacs can be handy in simple relaxation oscillators.
From the schematic, if available, it should be easy to guess the exact function.
Determining the exact specifications could be trickier.
From the schematic, if available, it should be easy to guess the exact function.
Determining the exact specifications could be trickier.
Klipsch RW-10 Blowing Fuses - Repair Thread - Home Theater - The Klipsch Audio Community
Here is a thread where that is stated.
There is another thread on this site where someone supposedly tested one and indicated it opened at 40V, indicating it as a DB4.
Shanghai Sunrise Electronics - datasheet pdf
Here is the data sheet for the Aston Martin.
Here is a thread where that is stated.
There is another thread on this site where someone supposedly tested one and indicated it opened at 40V, indicating it as a DB4.
Shanghai Sunrise Electronics - datasheet pdf
Here is the data sheet for the Aston Martin.
The switching supply seems ok, 160V on cap, cap looks ok. The +-15V regulators are functioning. None of the components look like the magic smoke came out. The speaker isn't blown. So it's something more subtle. So I'm looking for a schematic to trace the problem down. Anyone have a source for one? I did a search on this site but came up empty.. The Klipsch site also didn't seem to have anything.
Thanks,
Thanks,