Yes i just wondered if i can use bipolar or film capacitors instead of output and input electrolytic polar capacitors(i remember somebody tells film caps can not be used for dc blocking)
All capacitors block DC as long as they are in series with the signal.
And have the appropriate voltage rating.
Cap value determines how high above 0 Hz they start conducting AC.
Worth reading some basic electronics theory.
And have the appropriate voltage rating.
Cap value determines how high above 0 Hz they start conducting AC.
Worth reading some basic electronics theory.
Elcos are usually used because of size and cost. Price a 20kµF poly cap.
But they do work better.
We did a small Class A EL84PP amp with no elcos, it made a significant improvement. PS caps in a tube amp do not need to be as large (but higher voltage).
dave
I have ero 4.7uf 40v mkt1826 capacitors so i can use 2 of them in the input by soldering one on and other under pcb and can use instead of 10uF input caps. I do not remember where i saw it that someone said only polar caps should be used on some circuits
Hi, I'm sure this question has been asked and answered in some form already, so apologies. Also I have zero formal electronics training, so hopefully the forum will humor me. :
The standard wiring diagram for an ACA v1.8 has speaker + out (red) connected to ps ground. Does this mean that the output of the ACA as wired reverses the polarity, thus inverting (correcting) the phase back to non-inverted when speaker + out (red) is connected to the red terminals of the speakers?
The standard wiring diagram for an ACA v1.8 has speaker + out (red) connected to ps ground. Does this mean that the output of the ACA as wired reverses the polarity, thus inverting (correcting) the phase back to non-inverted when speaker + out (red) is connected to the red terminals of the speakers?
Yes, the ACA is inverting of overall phase and so the reversed speaker plug colours are purely to give overall non inversion of phase when it is connected conventionally i.e by a user who goes off the colours as indicating correct polarity.
basically the same, but addressed the 40v limitation of the 2sk170...
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i have a previous build running on 24vdc and will move to 36vdc supplies, i will just replace the jefts to 2sk117.....
