Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

Philco 511 Restoration and Questions
#8

I discovered via the schematic and looking at the by-pass condenser's with their plate winding resistors that there are three lugs.  The first lug that connects to the coil houses one side of the .1 MFD cap and one side of the wire wound resistor.  The second lug connects only the wire wound resistor.  The third lug connects only one side of the capacitor to chassis ground.  With this idea in mind I was able to replace each cap with a .1 MFD ceramic capacitor rated to 500V.  All wire wound resistor tested within 10 percent tolerance, success!  I highly doubt the peak voltage of this set is higher than 400V.  I just hope since these ceramic caps are on the DC side of the circuit that the capacitance is not lowered too much as a result of the DC current flowing through them.

Via the pictures below, this is how I replaced the condenser sections within each part.




Jon


Attached Files Image(s)
           

"A Minute of Care is Worth an Hour of Repair" circa 1930.


Messages In This Thread
RE: Philco 511 Restoration and Questions - by Philco281989 - 09-05-2015, 11:30 AM
RE: Philco 511 Restoration and Questions - by Jimmy Radionut - 07-14-2017, 12:46 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
That looks a lot like an aircraft connector of some kind, even if it's a U.S.N power supply. I have a book somewhere abo...Arran — 02:56 AM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
hello david, I have a similar generator in my collection that features a cast iron, single-cylinder Briggs & Stratt...radiorich — 01:00 AM
under chassis parts locator diagram for 1938 Zenith 9s262
Has anyone gone to the trouble of creating an under chassis parts locator image?  Yes, I can identify components by foll...bobloney — 08:57 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Try looking at this site the book mark is for a old generator that I was given. David    https://radionerds.com/index.ph...David — 08:36 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Hello Everyone, I am looking for voltage identification for all the pin positions on the socket of a CRV-20130 power su...Tonym4704 — 08:16 PM
Philco P45-6365 Universal Transformer Instruction Manual
Can anyone guide me to where this may be found?GRG — 03:00 PM
54C Complete Teardown/Rebuild
I don't think that I have encountered a 12Z3 before, curious how it uses one of those but includes a #43, which is a 25 ...Arran — 02:17 PM
HiFi (Chifi) tube amp build - but my own design.
It's the other forum. I'm also in DIY, but mostly read there. Honestly, I kinda jumped into this without much thought to...TV MAN — 10:43 AM
Philco 71 Code 125
Hello,  I am in need of a schematic for this radio. Mine has the three separate circular tube shields and a shadow me...dconant — 08:06 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated.dconant — 07:57 AM

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

>