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Old 14th December 2014, 11:20 PM   #1
phase is offline phase  United States
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Join Date: Oct 2004
Default Toshiba amps "ripple capacitor"

I've noticed a common component in the toshiba (TA7250, TA8210)chip amps is a"ripple capacitor", but I don't know what this is connected to inside the chip. One side is tied to ground, so maybe the power to the input gets or whatever they have?
Any guesses?
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Old 15th December 2014, 06:34 AM   #2
yajnaS is offline yajnaS  India
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Join Date: Jan 2011
from: TOSHIBA - datasheet pdf page 4:

5. Capacity of ripple filter
The on / off time constant of the protector of this IC is determined by the capacity of pin(6) ripple filter terminal.
Therefore, with the capacity expansion of the ripple capacitor, the ripple rejection is improved, however, the
following two problems arise.
(1) Interruption of sound at excessive input.
(2) Reduction of the protector strength at VCCshort, GND short or outout short. Consequently, the capacity of
the ripple capacitor is recommended to by 0.033μF.
Sounds like the ripple capacitor determines the time constant of the overcurrent protection circuit.
I would use the exact value they've specified or smaller.

Last edited by yajnaS; 15th December 2014 at 06:36 AM.
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Old 15th December 2014, 04:01 PM   #3
phase is offline phase  United States
diyAudio Member
Join Date: Oct 2004
Thanks for looking at this, I understand the timing function part, just was curious as to whether it was tied to anything that would affect the sonic qualities of the amplifier.
I should have asked more specific I suppose...
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