Philco 604 Bias Cell

Thread Rating:

0 Vote(s) - 0 Average
1
2
3
4
5

Linear Mode

Philco 604 Bias Cell

Radioroslyn
Phorum Expert

Posts: 7,286
Threads: 268
Joined: Dec 2009
City: Roslyn Pa

#22

03-30-2018, 12:22 PM

>separate resistor straight from the AC line to the lamps so they won't be subject to the higher voltage during filament warmup.
Not a great idea as you will need to drop abt 115v @ .15A = 770 ohm @ 18W eekkkkkk! Which means you'll need abt a 50w resistor so it doesn't get flaming hot.

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry

Find

« Next Oldest | Next Newest »

Messages In This Thread

Philco 604 Bias Cell - by mboessen - 03-28-2018, 03:37 PM

RE: Philco 604 Bias Cell - by morzh - 03-28-2018, 05:02 PM

RE: Philco 604 Bias Cell - by mboessen - 03-28-2018, 08:28 PM

RE: Philco 604 Bias Cell - by PhilcoPhan1936 - 03-29-2018, 04:16 AM

RE: Philco 604 Bias Cell - by Arran - 03-29-2018, 05:12 AM

RE: Philco 604 Bias Cell - by David - 03-29-2018, 08:24 AM

RE: Philco 604 Bias Cell - by Radioroslyn - 03-29-2018, 08:44 AM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 09:24 AM

RE: Philco 604 Bias Cell - by 462ron - 03-29-2018, 10:12 AM

RE: Philco 604 Bias Cell - by morzh - 03-29-2018, 10:47 AM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 10:57 AM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 11:00 AM

RE: Philco 604 Bias Cell - by 462ron - 03-29-2018, 01:34 PM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 03:06 PM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 09:31 PM

RE: Philco 604 Bias Cell - by mboessen - 03-29-2018, 09:39 PM

RE: Philco 604 Bias Cell - by Radioroslyn - 03-29-2018, 10:14 PM

RE: Philco 604 Bias Cell - by 462ron - 03-29-2018, 10:30 PM

RE: Philco 604 Bias Cell - by Radioroslyn - 03-29-2018, 11:04 PM

RE: Philco 604 Bias Cell - by mboessen - 03-30-2018, 08:49 AM

RE: Philco 604 Bias Cell - by 462ron - 03-30-2018, 10:07 AM

RE: Philco 604 Bias Cell - by Radioroslyn - 03-30-2018, 12:22 PM

RE: Philco 604 Bias Cell - by mboessen - 03-30-2018, 07:41 PM

RE: Philco 604 Bias Cell - by Arran - 03-31-2018, 02:20 AM

RE: Philco 604 Bias Cell - by mboessen - 03-31-2018, 10:32 AM

View a Printable Version

Users browsing this thread: 4 Guest(s)

Recent Posts
Philco 41-608 changer coupler
3D-printing...short of machining, of course. Or molding.morzh — 05:20 PM
Philco 41-608 changer coupler
Thanks, Morzh. That solves the issue of the rubber pieces. Now, I need to find a way to replicate the pot metal piec...alangard — 05:07 PM
12' Philco
If it is 12', either Kareem or Andre would have to jump pretty high to look at the front panel. Kareem would have an e...morzh — 01:48 PM
12' Philco
And here's a story about the tires on the truck. Same "no-stoop" guy must have installed these! Take care a...GarySP — 01:17 PM
Hickok AC51 tube tester
I think they have only shown the secondaries of the transformer. Two of them feed the rectifiers' filaments.morzh — 12:58 PM
IF can wire size and Rubber mounts?
Arran If the wire inside cans is the gauges you mentioned, the sole reason for that would be mechanical, to stiffen t...morzh — 12:56 PM
12' Philco
Rod, Yes, I know, but the Giant Philco is not around anymore either, so I go by whoever was alive fairly recently. H...morzh — 12:54 PM
Hickok AC51 tube tester
Absolutely no one is going to reverse engineer that circuit. Even the iron core is missing.RodB — 10:37 AM
IF can wire size and Rubber mounts?
Thanks to both members for your help regarding wire and tuner mtg supports. regards--Johngeorgetownjohn — 09:33 AM
Hickok AC51 tube tester
Note that no power cord, power switch, or power transformer switch are shown. That (along with my experience with full s...DaleHCook — 07:09 AM

Who's Online

There are currently 5565 online users. [Complete List]
» 1 Member(s) | 5564 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me