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

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

Potentiometers
#11

I fiddled a little with this today. I have a bottle of aquadag resistive coating, and tried various applications of this painted on to a piece of circuit board material.

By itself, resistance is fairly low, say for a 1" x 1/4" track. 10's of kOhm

Blending with PVA glue certainly made the coatings more robust and more resistive, as the carbon content of the film is reduced. It did not take much to get in to the MOhm range.

The next trick will be film thickness control.

I don't hold with furniture that talks.


Messages In This Thread
Potentiometers - by EdHolland - 11-13-2018, 01:37 PM
RE: Potentiometers - by Phlogiston - 11-13-2018, 01:50 PM
RE: Potentiometers - by EdHolland - 11-13-2018, 03:20 PM
RE: Potentiometers - by Chas - 11-13-2018, 10:32 PM
RE: Potentiometers - by Radioroslyn - 11-13-2018, 11:24 PM
RE: Potentiometers - by EdHolland - 11-14-2018, 02:52 PM
RE: Potentiometers - by Chas - 11-14-2018, 05:39 PM
RE: Potentiometers - by EdHolland - 11-15-2018, 01:50 PM
RE: Potentiometers - by morzh - 11-15-2018, 02:24 PM
RE: Potentiometers - by EdHolland - 11-15-2018, 05:02 PM
RE: Potentiometers - by EdHolland - 11-18-2018, 12:01 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
462ron
It’s on the bottom of the homepage of our Philcoradio.com homepage! Ron462ron — 07:20 AM
Model 70 Cabinet Trim
Steve might have some trim left. Not sure he is making anything.morzh — 06:12 AM
Model 70 Cabinet Trim
Hello musar, First all welcome to the forum and yes that is true that steve stopped making trim . Sincerely Richar...radiorich — 12:13 AM
Model 70 Cabinet Trim
I have recently come into possession of a Model 70.  The trim around the base needs to be replaced.  If this were years ...musar — 12:07 AM
philcorepairbench.com - shadow-meter
Anyone know of a way to recover these files from the repair bench? Thanks. fenbach — 11:16 PM
Philco model 38 code 121 not receiving signal.
That's true. Of course If I were to get a vtvm I'd probably have to sink money in to it to get it working right. Probabl...Stormlord5500 — 08:44 PM
Philco model 38 code 121 not receiving signal.
A DMM is good enough. One rarely has to measure indictance, but if you do, short of getting a serious LCR meter (I hav...morzh — 07:35 PM
Testing a speaker and output transformer Trutone A2-G
You guy's are right on. I found a broken wire on the speaker plug that I replaced and all is well now. Have better volu...murf — 03:43 PM
Philco model 38 code 121 not receiving signal.
I need to get a vtvm. I think that little component tester is just more accurate. Plus it shows the inductance which is ...Stormlord5500 — 03:07 PM
Philco model 38 code 121 not receiving signal.
I use a pair of Mastercraft brand DMMs from Canadian Tire, from what I read most of those DMMs use the same main chip re...Arran — 02:36 PM

[-]
Who's Online
There are currently 233 online users. [Complete List]
» 1 Member(s) | 232 Guest(s)
Avatar

>