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
38-10T chassis Restoration begins
Hello Dconant , they sold mica to use as a insulator between transistors and their heatsinks too. Rob I will remove th...radiorich — 02:52 PM
38-10T chassis Restoration begins
Thanks for the info guys. I always wondered why the use of mica. Now I know.dconant — 01:52 PM
38-10T chassis Restoration begins
Most common plastics have a dielectric constant in the 3-4 range whereas mica is around 6. This means that even if you w...Steve D — 01:46 PM
38-10T chassis Restoration begins
It is acceptable but not desirable. Plastic is not an approved cap dielectric, and even though a reasonably thick piece...morzh — 11:52 AM
38-10T chassis Restoration begins
I have a question about the mica sheets. I thought I saw somewhere on the Phorum where someone used thin plastic report ...dconant — 10:44 AM
38-10T chassis Restoration begins
Yes, you should carefully remove the mica sheets from the trimmers otherwise you risk trapping foreign material in the t...RodB — 10:34 AM
American Bosch Model 802 auto radio
Hi Joe, Thank you again. The American Bosch Model 634A has the same tube lineup as my Model 802 and the parts layout dia...Antipodal — 03:09 AM
38-10T chassis Restoration begins
hello everyone, I know it has been a while since I have posted about this radio but finally got chance work on it . I ...radiorich — 02:45 AM
Rusty Tuning Condenser
You could soak the fins in vinegar. You have to be careful if any pot metal is involved because the vinegar will dissolv...RodB — 09:20 PM
Rusty Tuning Condenser
Hello, I have a Philco 91 where the tuning condenser fins are rusty. I magnet sticks to them so they can't be aluminium....dconant — 05:50 PM

[-]
Who's Online
There are currently 3743 online users. [Complete List]
» 1 Member(s) | 3742 Guest(s)
Avatar

>