Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Arvin 182TFM Sw?
#1

Have an Arvin 182TFM and I'm putting a polarized plug normally I put the hot side to the switch but this is different how should I wire it?
http://www.nostalgiaair.org/pagesbymodel...012465.pdf

TKS Eric
#2

If the GND symbol is the real chassis, I'd use Neutral for the switch.

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.
#3

Yes the other side of the switch goes directly to the chassie so I will put the Neutral there.
#4

I have replaced the Selenium Rectifier with a Diode and dropping resistor 224ohms 5w and at 120vac in it drops 12.8vdc across it.
Across the filter caps I get
 C28A 95vdc
 C28B 90vdc
 C28C 82vdc
This seems low to me should I drop the value of the dropping resistor? Nowhere in the prints can I find any value of what it should be.
Thanks 
Eric
#5

220 ohms seems pretty high for the series dropping resistor. I would try 25 to 50 ohms and see how the DC across the filters responds. 

You really can't go by the DC drop across the resistor because you are measuring the average DC of a rectified sine wave. The peak voltage drop is what is important, as the first filter cap charges to the peak of the AC cycle and determines the resulting DC output. 

Just choose the resistance value that gives the proper output voltage at the filter caps, or at other locations shown on the schematic
#6

Changed the dropping resistor to 50 ohms theses are the new voltages.

New V
C28A 95vdc 121 vdc
C28B 90vdc 113 vdc
C28C 82vdc 103 vdc
Now for more trouble shooting.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Correct model 84 Ac plug an cord type
I remember a bakelite "lampshade" (a fancy lampshade) style plug being available in the hardware store when I ...MrFixr55 — 10:39 AM
Correct model 84 Ac plug an cord type
Hello Arran Yes, I also like the lampshade style plug ! Sincerely Richardradiorich — 08:46 AM
Restoring Philco 38-14
Hello morzh, Nice explanation on the x and y capacitors and glad you are narrowing down the issue with this set ! Si...radiorich — 08:43 AM
Correct model 84 Ac plug an cord type
From what I read Philco went to using brown rubber power cords in 1936, so cloth was used in the 1935 and earlier models...Arran — 11:25 PM
Correct model 84 Ac plug an cord type
Hi Bruce, I have not worked on an 84, but in general, power cords for almost any radio prior to 1938 was cloth covered...MrFixr55 — 08:34 PM
Restoring Philco 38-14
OK, well, so after staring at the sch again, I realized the problem had to be the #12/12A padder. I put a scope on the o...morzh — 08:15 PM
Correct model 84 Ac plug an cord type
Hello Bruce, I mostly use brown far as my cloth powercords go ! Here is the plug that I have used bakelite Acorn style...radiorich — 08:05 PM
Correct model 84 Ac plug an cord type
Looking for as correct as can find the right Ac plug an the correct colored cloth line. Ive seen many old photos but mos...Bruce — 04:13 PM
Restoring Philco 38-14
Rod Two Y-caps make sense if you use them from L/N to the chassis; this is only makes sense in the transformer radios w...morzh — 10:11 AM
Restoring Philco 38-14
Mike, I'm curious about a specific use of he Y cap. Lately I've seen a single cap across the power transformer primary. ...RodB — 09:01 AM

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

>