1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
Model 118 shadowmeter
Steve D
Member
***
Posts: 115
Threads: 25
Joined: Jul 2006
City: Lebanon, NJ 08833
#5

03-02-2014, 05:14 PM
Well I just ran the shadowmeters from a LV supply and both do function properly. After bending the light source to get the shadow centered it takes 10mA for full deflection on the meter with the 850 ohm coil and 15mA for the one with the 1.4K coil. The 850 ohm unit was the one in my original chassis so I will use that one.

I also noticed quite a few differences between my chassis and the donor chassis including the tuner dial and band selector switch. I guess these were running changes. Seems odd that they changed the sensitivity of the shadowmeter by 50% and it is used in the same circuit.

Thanks,

Steve D
Find
« Next Oldest | Next Newest »


Messages In This Thread
Model 118 shadowmeter - by Steve D - 02-28-2014, 11:11 AM
RE: Model 118 shadowmeter - by morzh - 02-28-2014, 11:21 AM
RE: Model 118 shadowmeter - by jerryhawthorne - 02-28-2014, 03:35 PM
RE: Model 118 shadowmeter - by hsusmann - 02-28-2014, 07:48 PM
RE: Model 118 shadowmeter - by Steve D - 03-02-2014, 05:14 PM



Users browsing this thread: 3 Guest(s)
[-]
Recent Posts
Philco 42-1008 conversion kit
I read about a kit to convert the variable speed changer in the Philco 42-1008 into a single speed unit.  That would rem...alangard — 09:30 PM
HiFi (Chifi) tube amp build - but my own design.
Tim Well...a chassis is metal. Magnetic or not, it does not matter. A transformer has some hum to it. It is natural....morzh — 08:40 PM
Hickok AC51 tube tester
I thought the 83 tube was bad because it looked white but it tests strong. Blue gassy though. I checked the fuse, it was...martinj — 08:37 PM
Shadow Meter Bulb
Ross I am not sure what current limiting effect the incandescent provides. They are two different parts of the sch...morzh — 08:31 PM
12' Philco
Bob Thanks for that photo. I have been looking for it, and I cannot find anythinmg on the web. I forgot it was here...morzh — 08:29 PM
Shadow Meter Bulb
I think after all has been said, I will use the same bulb that is specified for the dial pilot light which is a #55. I ...georgetownjohn — 07:31 PM
12' Philco
There was also this Philco! klondike98 — 07:25 PM
HiFi (Chifi) tube amp build - but my own design.
I expected a challenge and this is just part of it. But, it's also supposed to be fun, entertaining, informative and enj...TV MAN — 07:12 PM
Shadow Meter Bulb
Butting in here with a question. Since the shadow meter is connected directly to the 1st and 2nd I.F.'s wouldn't the met...RossH — 06:43 PM
HiFi (Chifi) tube amp build - but my own design.
Mike, Tim; you are about to enter the twilight zone. Doo doo doo doo, doo doo doo doo This is something alright. I'm go...RodB — 06:26 PM

[-]
Who's Online
There are currently no members online.

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration