A conventional 1-4u film capacitor is an equivalent replacementWhat is the role of D7/D8 ?
Don't fantasize when you don't understand. Not true.
They are used as ordinary diodes.
Zeners are chosen because they have a larger drop and during normal operation the current through them is uA.
And in short mode do not limit the current naturally.
As far as I know, zeners were placed in the cathodes of cascades with a common anode.
I see, R1/R2, 30k/1k balances the negative 3k/1k. CFA designers not to mention don't know this technique.With CFA, ground loop breaker causes inter channel crosstalk and it will with your circuit also.
Watch the diagram from # 94I see, R1/R2, 30k/1k balances the negative 3k/1k. CFA designers not to mention don't know this technique.
R2/R1 30k/1k
(R25+R28+R30)/R4 (1k+1k+1k)/100 3k/100
You probably don't know, but when a pulse current flows through the capacitor in only one direction, it is charged.I made a model with zeners . There is no difference with capacitors. I stand by my opinion
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Comparing diode of Zener and 1n4148
With 2×3.3 ohms this is current of the diodes in red 1n4148.
View attachment 901668
and with 2×5.5 ohms for 1n4148
View attachment 901669
Are these diodes following in temperature the output transistors?
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Try to think again about what will happen when the final transistors heat up.
They are on the heatsink and the diodes on the board.
By heating the radiator, the thermal compensation circuit will reduce the base / emitter voltage and therefore the voltage across the diodes, and the current through the diodes will decrease even more.
They are on the heatsink and the diodes on the board.
By heating the radiator, the thermal compensation circuit will reduce the base / emitter voltage and therefore the voltage across the diodes, and the current through the diodes will decrease even more.
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current feedback power amplifier
Nice to see the early version of my power amplifier
Sajti
https://www.diyaudio.com/forums/att...rajz-png-070ba69a5babab240a5cd2593861d0c3-png. - Where can i read about it
- Home
- Amplifiers
- Solid State
- Apex A40 fundamental improvement. (Sandy)