| "David Farber" <farberbear.unspam@aol.com>: Mar 24 01:41PM -0700 > glad i could help > :-) > Mark When I receive the replacement capacitors, which will be the original ones according to the schematic, I will remove the 100k resistors and see if the circuit still works. You have to believe that somehow the system worked for many years until something changed. Thanks for your reply. -- David Farber Los Osos, CA |
| Michael Black <et472@ncf.ca>: Mar 24 04:09PM -0400 |
| "pfjw@aol.com" <pfjw@aol.com>: Mar 24 01:31PM -0700 On Friday, March 24, 2017 at 4:02:07 PM UTC-4, Michael Black wrote: > The good magnets are great, but lots of trouble removing them from > something. > Michael There is that, of course. And with neodymium magnets, switching them "off" is difficult. I was addressing the concept of magnetic fields in the first place. I would also suggest AC on the electromagnet as that will naturally de-magnetize anything it touches - cf.: tape-head demagnetizers. Peter Wieck Melrose Park, PA |
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