 Voltmeter Behavior, Verify Accuracy |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| Superhawk996 |
 Jun 24 2024, 07:28 PM
Post
#1
|
|
914 Guru  Group: Members Posts: 7,219 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch 
 |
Starting a new thread in response to @emeryGT 350 comment in another thread as follow up
Here’s the background:  |
   |
 
|
  |
Replies
| rjames |
Jun 25 2024, 10:47 AM
Post
#2
|
|
I'm made of metal Group: Members Posts: 4,313 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest
|
emerygt350 might just have a bad gauge. Mine gave inconsistent readings, started reading ~5 volts under, then later 10 under, and then ultimately nothing. Tapping it once in a while would bring it back to life, but eventually it completely died.
|
|
|
|
| Superhawk996 |
Jun 25 2024, 11:06 AM
Post
#3
|
|
914 Guru Group: Members Posts: 7,219 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
|
QUOTE(rjames @ Jun 25 2024, 12:47 PM)  emerygt350 might just have a bad gauge. Mine gave inconsistent readings, started reading ~5 volts under, then later 10 under, and then ultimately nothing. Tapping it once in a while would bring it back to life, but eventually it completely died. Anyone have one opened up? I’d be curious to verify what’s doing the damping. I’m assuming it’s just a little ceramic disc capacitor via RC circuit. However based on how this one gauge will linger at 16v position while the other doesn’t (as long) I suspect there is some difference in capacitance and/or resistor values between my two gauges. |
|
|
|
Posts in this topic
Superhawk996 Voltmeter Behavior Jun 24 2024, 07:28 PM
Superhawk996 I have two gauges, tested both at a variety of vol... Jun 24 2024, 07:34 PM Superhawk996 Gauge #1
Jun 24 2024, 07:36 PM emerygt350 Very interesting! Could you do some readings ... Jun 24 2024, 07:39 PM Superhawk996 Yup will do
Here’s 14v. Jun 24 2024, 07:42 PM Superhawk996 RE: Voltmeter Behavior Jun 24 2024, 07:46 PM Superhawk996 Gauge #1 at 13.7v
Gauge #2 at full scale - wa... Jun 24 2024, 07:54 PM Superhawk996 Gauge #2 12v nominal Jun 24 2024, 08:09 PM windforfun What's the problem? How exactly do you expect... Jun 24 2024, 08:11 PM
Superhawk996
What's the problem? How exactly do you expec... Jun 24 2024, 08:20 PM windforfun Copy that. The power supply reads out to one plac... Jun 24 2024, 08:40 PM Superhawk996
Copy that. The power supply reads out to one pla... Jun 24 2024, 10:18 PM windforfun
Copy that. The power supply reads out to one pl... Jun 25 2024, 09:03 AM Superhawk996
Recognize anything?
@windforfun
Nice test ... Jun 25 2024, 09:33 AM emerygt350 I was interested in the behavior of the voltage me... Jun 25 2024, 04:46 AM mb911 Good data. Unfortunately mine is right on. Jun 25 2024, 05:17 AM 914Sixer 60's-70's are what I call ball park gauges... Jun 25 2024, 05:53 AM emerygt350 I think of it more as a dummy light or perhaps a ... Jun 25 2024, 06:23 AM Superhawk996
I should double check my ground shouldn't i... Jun 25 2024, 06:32 AM GregAmy Unless you want to rewire it directly to the batte... Jun 25 2024, 07:11 AM emerygt350
Unless you want to rewire it directly to the batt... Jun 25 2024, 08:44 AM technicalninja Thanks, Superhawk!
The dash meters are FAR mo... Jun 25 2024, 08:08 AM emerygt350 Just checked the grounds engine to body engine to ... Jun 25 2024, 09:25 AM Superhawk996
Just checked the grounds engine to body engine to... Jun 25 2024, 09:29 AM Superhawk996 gauge #1
Delay and damping behavior related to in... Jun 25 2024, 09:53 AM ClayPerrine For what it is worth, I use the stock voltmeter as... Jun 25 2024, 10:31 AM emerygt350
For what it is worth, I use the stock voltmeter a... Jun 25 2024, 11:17 AM emerygt350
[quote name='rjames' post='3153039' date='Jun 25 ... Jun 25 2024, 11:20 AM Superhawk996
[quote name='rjames' post='3153039' date='Jun 25... Jun 25 2024, 11:24 AM Superhawk996 Gauge #2
Slightly different damping behavior. P... Jun 25 2024, 05:18 PM emerygt350 It is interesting how in both cases they behaved b... Jun 25 2024, 07:19 PM Superhawk996
It is interesting how in both cases they behaved ... Jun 25 2024, 07:54 PM emerygt350 I finally dug into the console. I had compared th... Jun 26 2024, 05:02 AM Superhawk996 :trophy:
Now those delays and variable voltage d... Jun 26 2024, 06:08 AM emerygt350
:trophy:
Now those delays and variable voltage ... Jun 26 2024, 06:13 AM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 11th July 2025 - 07:05 AM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.