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Philco Model 20 Lowboy
#22

I do not have a fuse on my 20 radios, I might have it on one radio I restored for my dad.
At any event, I would rate a fuse at 1.5x the radio's max current rating, and make it a slo-blo (time-lag) type.
An inrush limiter, in my opinion, is an overkill for this type of application.
I used them in AC/DC switching supplies as there is a very sizeable inrush due to an unprotected discharged capacitance essentially in parallel (disregard the rect bridge) to the AC supply. In a radio with a transformer there is essentially an inductance (which is what an unloaded transformer is) and this does not result in a very strong inrush.
There is one possibility when a switch gets made exactly at the point of the AC voltage crossing zero, that could result in some DC-like behavior and saturation by the transformer, but not for a long time as there is some finite loss resistance there.

This said, the peace of mind is a priceless thing and if it makes you sleep better at nights, by all means the limiter is good.
The fuse is a good idea in any case.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.


Messages In This Thread
Philco Model 20 Lowboy - by WallaceRoger - 02-23-2017, 05:14 PM
RE: Philco Model 20 Lowboy - by morzh - 02-23-2017, 05:44 PM
RE: Philco Model 20 Lowboy - by KCMike - 02-23-2017, 05:48 PM
RE: Philco Model 20 Lowboy - by klondike98 - 02-23-2017, 05:48 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 02-23-2017, 06:05 PM
RE: Philco Model 20 Lowboy - by Radioroslyn - 02-23-2017, 07:36 PM
RE: Philco Model 20 Lowboy - by morzh - 02-23-2017, 11:54 PM
RE: Philco Model 20 Lowboy - by David - 02-24-2017, 08:16 AM
RE: Philco Model 20 Lowboy - by WallaceRoger - 03-23-2017, 03:40 PM
RE: Philco Model 20 Lowboy - by Steve Davis - 03-23-2017, 06:10 PM
RE: Philco Model 20 Lowboy - by morzh - 03-23-2017, 06:14 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 03-23-2017, 10:46 PM
RE: Philco Model 20 Lowboy - by Arran - 03-24-2017, 12:13 AM
RE: Philco Model 20 Lowboy - by morzh - 03-24-2017, 08:52 AM
RE: Philco Model 20 Lowboy - by WallaceRoger - 03-24-2017, 10:47 AM
RE: Philco Model 20 Lowboy - by morzh - 03-24-2017, 10:51 AM
RE: Philco Model 20 Lowboy - by WallaceRoger - 04-16-2017, 05:03 PM
RE: Philco Model 20 Lowboy - by GarySP - 04-16-2017, 08:34 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 04-16-2017, 09:07 PM
RE: Philco Model 20 Lowboy - by morzh - 04-16-2017, 09:28 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 04-18-2017, 02:10 PM
RE: Philco Model 20 Lowboy - by morzh - 04-18-2017, 02:24 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 04-18-2017, 04:46 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 04-29-2017, 08:13 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 04-29-2017, 08:33 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 05-05-2017, 08:12 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 05-05-2017, 09:56 PM
RE: Philco Model 20 Lowboy - by morzh - 05-05-2017, 10:06 PM
RE: Philco Model 20 Lowboy - by Steve Davis - 05-05-2017, 11:39 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 05-06-2017, 11:05 AM
RE: Philco Model 20 Lowboy - by jcassity - 05-06-2017, 11:36 AM
RE: Philco Model 20 Lowboy - by morzh - 05-06-2017, 12:21 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 05-06-2017, 07:31 PM
RE: Philco Model 20 Lowboy - by Steve Davis - 05-06-2017, 11:01 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 05-07-2017, 04:30 PM
RE: Philco Model 20 Lowboy - by morzh - 05-07-2017, 06:23 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 05-13-2017, 04:45 PM
RE: Philco Model 20 Lowboy - by morzh - 05-13-2017, 04:54 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 05-13-2017, 06:09 PM
RE: Philco Model 20 Lowboy - by morzh - 05-13-2017, 06:44 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 05-13-2017, 07:01 PM
RE: Philco Model 20 Lowboy - by morzh - 05-13-2017, 07:39 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 05-14-2017, 12:31 AM
RE: Philco Model 20 Lowboy - by Radioroslyn - 05-14-2017, 07:55 AM
RE: Philco Model 20 Lowboy - by morzh - 05-14-2017, 10:41 AM
RE: Philco Model 20 Lowboy - by WallaceRoger - 05-14-2017, 11:57 AM
RE: Philco Model 20 Lowboy - by WallaceRoger - 05-15-2017, 09:07 PM
RE: Philco Model 20 Lowboy - by morzh - 05-15-2017, 10:14 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 05-16-2017, 01:11 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 06-18-2017, 11:09 PM
RE: Philco Model 20 Lowboy - by Radioroslyn - 06-19-2017, 12:56 AM
RE: Philco Model 20 Lowboy - by WallaceRoger - 06-19-2017, 10:05 AM
RE: Philco Model 20 Lowboy - by WallaceRoger - 06-19-2017, 09:42 PM
RE: Philco Model 20 Lowboy - by Radioroslyn - 06-19-2017, 10:18 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 06-20-2017, 11:39 AM
RE: Philco Model 20 Lowboy - by Radioroslyn - 06-20-2017, 12:45 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 06-20-2017, 09:02 PM
RE: Philco Model 20 Lowboy - by Radioroslyn - 06-20-2017, 11:26 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 06-21-2017, 02:08 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 07-01-2017, 04:15 PM
RE: Philco Model 20 Lowboy - by KCMike - 07-01-2017, 05:35 PM
RE: Philco Model 20 Lowboy - by Radioroslyn - 07-01-2017, 08:56 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 07-01-2017, 11:17 PM
RE: Philco Model 20 Lowboy - by Radioroslyn - 07-02-2017, 12:28 AM
RE: Philco Model 20 Lowboy - by morzh - 07-02-2017, 08:38 AM
RE: Philco Model 20 Lowboy - by WallaceRoger - 07-02-2017, 11:11 AM
RE: Philco Model 20 Lowboy - by morzh - 07-02-2017, 01:20 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 07-02-2017, 03:38 PM
RE: Philco Model 20 Lowboy - by Ron Ramirez - 07-02-2017, 06:53 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 07-02-2017, 08:20 PM
RE: Philco Model 20 Lowboy - by morzh - 07-02-2017, 10:40 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 07-03-2017, 10:40 AM
RE: Philco Model 20 Lowboy - by morzh - 07-03-2017, 10:52 AM
RE: Philco Model 20 Lowboy - by WallaceRoger - 07-03-2017, 02:25 PM
RE: Philco Model 20 Lowboy - by Radioroslyn - 07-03-2017, 09:38 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 07-04-2017, 02:30 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 07-10-2017, 09:26 PM
RE: Philco Model 20 Lowboy - by morzh - 07-10-2017, 09:39 PM
RE: Philco Model 20 Lowboy - by GarySP - 07-10-2017, 09:40 PM
RE: Philco Model 20 Lowboy - by morzh - 07-10-2017, 09:41 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 07-10-2017, 09:43 PM
RE: Philco Model 20 Lowboy - by morzh - 07-10-2017, 10:02 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 07-10-2017, 10:08 PM
RE: Philco Model 20 Lowboy - by WallaceRoger - 07-14-2017, 01:29 PM
RE: Philco Model 20 Lowboy - by morzh - 07-14-2017, 05:12 PM
RE: Philco Model 20 Lowboy - by Steve Davis - 07-15-2017, 10:37 AM



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