|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
12.10.199.11
In Reply to: RE: Standby switch...pros and cons? posted by hennfarm on August 19, 2016 at 11:37:45
The NTC inrush limiting thermistor delays B+ rise for a few seconds. Those few seconds are enough, when an "instant on", SS rectified, bias supply is employed.
The 1st cap. can't charge up very quickly, working through the thermistor's cold resistance. Ohm's Law tells us that the charging current is limited.
Eli D.
Follow Ups:
I used 2) cl-120 in series after my shottky bridge and I observed b+ bang right on with a dmm. YMMV I suppose. JH
I would have chosen a device with a higher cold resistance and a longer time constant. A CL-140 (50 Ohms cold vs. 10 Ohms for a CL-120) would have been my choice. Also, I've never had any luck using them in series in the location where you have them. IMHO a single CL-140 would do much better for you.
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: