PDA

View Full Version : Are the TRW Tubular Caps on IBM PC Motherboard Polarized?



mmruzek
May 17th, 2012, 01:34 PM
Does anyone know if the 3 reddish TRW Tubular capacitors used on the IBM 16KB-256KB Motherboard are polarized? (See Photo of 'equivalents' I am using) There is 1 of .047 uF value, and 2 of .01 uF value. If someone knows a simple non-destructive test to check polarization I would appreciate the information. Thanks! Michael

8950

MikeS
May 17th, 2012, 01:35 PM
Does anyone know if the 3 reddish TRW Tubular capacitors used on the IBM 16KB-256KB Motherboard are polarized? (See Photo of 'equivalents' I am using) There is 1 of .047 uF value, and 2 of .01 uF value. If someone knows a simple non-destructive test to check polarization I would appreciate the information. Thanks! Michael

8950Not polarized. You're not likely to see a polarized cap less than .1 uF.

mmruzek
May 17th, 2012, 02:20 PM
Thank You! If any smoke shows in subsequent testing I will update this posting with the information. Regards, Michael