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

Resistor substitution 20% range?
#13

(03-06-2012, 12:47 AM)Arran Wrote:  
(03-03-2012, 12:40 PM)lyle Wrote:  Thanks Arran,

I've checked every resistor in the set and only two are within 10%. I will replace them all as well as rebuild the Bakelite blocks. tone control, replacing all caps with the exception of the mica caps.

Where do you find resistors for $0.05? JustRadios and TubesAndMore are around $0.45 each. Do you buy them by the boxcar load? Icon_smile

I would like to ask how I can get beyond just being a mechanic. I've studied up on basic electronics and understand resistance, capacitance, resonance, etc., went through an RCA radio course on disc, so I get the theory. But, I would really like to know why a certain resistor is where it is and what it does. I would like to look at a schematic and understand what all the components do and how everything ties together. I've restored a number of nice old radios mainly by recapping. I have a couple of cheap old tube radios that I could experiment on. I've also home-brewed some crystal and one tube broadcast and SW band radios. I may not be expressing this very well, but I hope you get my drift.

I would be happy to hear from anybody on this subject.

Thanks for replying to my resistor question.

lyle

Well for starters Mauser Electronics sells quite a variety, not sure why common 1/2 watt resistors would be $.45 each that is more in line with what a 1 watt or higher resistor would cost. I would also try WJOE.com and Bob's Old Radios and Radio Daze for comparisons but Mauser has the largest selection. Quite often a more local parts jobber would carry most of what you would need as well but the price would be higher although still not $.45 each.
Regards
Arran

Actually I need to read more carefully. JustRadios sells 5 packs of 1 watters for 59 cents. Which works fine for me. Apologies to Dave at JustRadios.

Now attending Remedial Reading,

Regards,

lyle

I may not be very good, but I'm slow.


Messages In This Thread
Resistor substitution 20% range? - by lyle - 03-02-2012, 07:29 PM
RE: Resistor substitution 20% range? - by lyle - 03-02-2012, 09:15 PM
RE: Resistor substitution 20% range? - by lyle - 03-03-2012, 12:52 PM
RE: Resistor substitution 20% range? - by lyle - 03-05-2012, 01:01 PM
RE: Resistor substitution 20% range? - by lyle - 03-03-2012, 12:49 PM
RE: Resistor substitution 20% range? - by Arran - 03-03-2012, 12:18 AM
RE: Resistor substitution 20% range? - by lyle - 03-03-2012, 12:40 PM
RE: Resistor substitution 20% range? - by Arran - 03-06-2012, 12:47 AM
RE: Resistor substitution 20% range? - by lyle - 03-07-2012, 12:35 PM



Users browsing this thread: 6 Guest(s)
[-]
Recent Posts
Philco 46-420 Code 121 Reception issues
Welcome Eric, I agree with Bob and far as the two main electrolytic filter capacitors did you change them yourself or w...radiorich — 11:43 PM
Philco 46-420 Code 121 Reception issues
You mentioned the Philco manual and going through the check points...just to be sure we're on the same page here's the m...klondike98 — 08:13 PM
Philco 42-1008 conversion kit
Interesting. I haven't seen that before.klondike98 — 07:02 PM
12' Philco
Yes I had looked for it on the web as well some time back and could not find it. I was glad to see it turned up in Ron'...klondike98 — 06:59 PM
Shadow Meter Bulb
Now if you had a set with a tuning light then the bulb type is important to the circuit, some sets used those prior to t...Arran — 04:58 PM
Shadow Meter Bulb
Ok. Thanks for the correction.RossH — 03:09 PM
Model 28L
For 28 you will probably need to buy a Hammond 125CSE. Or any of the series of the power you need, with SE suffix. Then ...morzh — 02:09 PM
37-60 revision 6
I am restoring a Philco 37-60 and it shows run 6 they removed the ground from G3 of the 6K7G and put the G3 to -2.5v for...bobbyd1200 — 01:01 PM
Shadow Meter Bulb
Mike is correct on the bulb connection, two separate circuits. I found that by rotating the bulb and sliding it forward ...RodB — 12:19 PM
Hickok AC51 tube tester
Cleaned ann contacts, switches and sockets, works great now.martinj — 11:32 AM

[-]
Who's Online
There are currently 6312 online users. [Complete List]
» 4 Member(s) | 6308 Guest(s)
AvatarAvatarAvatarAvatar

>