I was wondering if you can test for bad filter capacitor breakdown with a digital insulation meter like you can with an analog insulation meter. Does it have to be analog or will the digital work? If both work which is more accurate?
-
-
Re: Digital or Analog Insulation Meter/Tester
Hi, the bad filter capacitor you mean it is breakdown in your application. Is the working condition beyond the filter capacitor specification?
For example, frequency range, temperature range, max. ripple current and capacitor installation.
If everything is alright, you can compare the new capacitor ESR with a good quality capacitor reading with a reasonable frequency setting.
Wishing this can be useful for you.
Goman -
Re: Digital or Analog Insulation Meter/Tester
Some insulation meters have multiple voltage ranges (100, 250, 500 and 1000V on mine), while others only have one range (I think it is 500V).
I'd go for the digital insulation tester.My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.Comment
-
Hi
I want to change the scale of an analog meter, to monitor the charge of an li-ion single cell, so the needle at the end would point 4.2 volts and the 0 on the meter would point 2.5 volts or so, i tried to add diodes or a zener in series with the meter but the changes of the ambient temperature also changes the voltage value on the meter
I wonder how i can accomplish this so the meter would be precise at any temperature ?
Thnaks -
Most analog meters are actually current driven - a current is needed to deflect the pointer full scale. They can be lots of different values. There are ones that can take several amperes to swing the pointer as they have internal shunts.
On the other hand there are many that are rated in microamps for the intent that they draw as little power as possible from the devices under test. Some are 1mA, 500µA, 200µA, 100µA, and the ubiquitous 50µA frequently used in analog VOMs. There are even 20, 25, 30 µA and even down to 10µA. Been collecting a bunch of different ratings and... -
It's an MS8301A made by OKE. bought it at Home Depot.... -
I have had with regular AA batteries that leak this meter is expensive new I already replaced the battery battery clips once and the same thing happened again and I am tried of so it is getting modified to accommodate lithium ion batteries that are the same size excluding the positive terminal and removing the battery clips I will have enough room for the BMS protection board
I going to put 3 lithium ion battery in parallel with the BMS protection board and a way to charge the battery externally and heat shrink the battery pack and use a JST connector so I easily remove the battery... -
Just wondering - I'm sure some here have destroyed analog meters in the past. I'm curious as to how much overcurrent is needed to destroy these things.
I accidentally left my 20KΩ/V analog meter in the 10mA range trying to monitor a solar cell. The solar cell was in subdued lighting at the time (twilight/dusk) and was getting 1mA or so. However I had forgotten about it and later the full sun shone on it...
In full sun, or typically when it's sunny, the cell delivers 100mA (it should be more than this as far as I know, possibly age related decay, dunno, hence...
Comment