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

Thread Closed

Resistors Volatges
#1

Hi to all,

I have a basic question on working voltages of resistors?

When I used to know tube circuit like the back of my hand, gees the knowledge has kind of flowed out of my brain. Just an couple of days ago, more like 45 years +, I never was concerned about resistor working voltages in most circuits. Today it looks like that could be a problem with most circuits running at a lot less voltage.

I have been noticing that most 1/2 W resistors have a working voltage of between 300 to 350 Volts that are on ebay. I have tried to look at Mouser catalog, but that one is very confusing with so many variables to wade through.

I have noticed either film or carbon has the same working voltage so that does not seem to be a problem. My question is what do you do when a set has a higher working voltage? Do you use the ebay ones? Or were do you get the higher rated voltages.

Or do you even worry about running these resistors at maximum working voltage or a little over. (I have a Philco set that runs around 400 volts on the plates by the schematic but the secondary on the transformer is around 700 volts, have not been able to figured out were the rest is going to).

I hope I have not confused any one to much as I kind of ramble on. At least that is what my wife says.



Thanks Ed.

This is my therapy for keeping my brain from turning into mush in my younger years. I hope.


Messages In This Thread
Resistors Volatges - by plymouth53 - 12-16-2013, 06:43 AM
RE: Resistors Volatges - by tom.seeger - 12-16-2013, 01:00 PM
RE: Resistors Volatges - by morzh - 12-16-2013, 01:25 PM
RE: Resistors Volatges - by Bradley Rush - 12-16-2013, 07:25 PM
RE: Resistors Volatges - by plymouth53 - 12-17-2013, 05:55 PM
RE: Resistors Volatges - by exray - 12-17-2013, 07:04 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
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
54C Complete Teardown/Rebuild
Hello Roy, here is this one sincerely Richardradiorich — 12:45 AM
54C Complete Teardown/Rebuild
Richard, Had grabbed it already but thank you just the same.  I find myself wanting to find some way to block out the...glyphmon — 12:03 AM
54C Complete Teardown/Rebuild
Hello roy, here is a link to the schematic . Sincerely Richardradiorich — 11:54 PM
54C Complete Teardown/Rebuild
Richard, The Silvertone 2014 also is a transformerless set, so I am incorporating a 1:1 600 ohm audio isolation transfo...glyphmon — 11:37 PM
Preliminary work on wife's Silvertone 2014
Did an alignment today which was interesting.  IF alignment went great, almost all was already spot-on.  Adjusting on th...glyphmon — 11:35 PM

[-]
Who's Online
There are currently 2351 online users. [Complete List]
» 1 Member(s) | 2350 Guest(s)
Avatar

>