Johnson power pack testing

[Tim T.]

Can an old Simpson 280 series meter be used to test Johnson power pack? It has a positive and negative DC setting and a range of 500v but I am not sure if this is a DVA meter. thx in advance

 

[Crosbyman]

google DVA designs ... a few diodes and condensers will allow you to convert the AC to DC for reading with your vom

 

[dingbat]

Simpson 280 series meter

What exactly do you have?
280 series not showing up on the Simpson web site
I see a Simpson 2800 series meter which is basically a display

 

[Tim T.]

What exactly do you have?
280 series not showing up on the Simpson web site
I see a Simpson 2800 series meter which is basically a display

Sorry it is a 260 series. I need to know if can used as a DVA meter

 

[Tim T.]

google DVA designs ... a few diodes and condensers will allow you to convert the AC to DC for reading with your vom

I watched that video but I do not want to spend the money if my old Simpson 260 series can be used as a DVA meter? any ideas?

 

[Tim T.]

What exactly do you have?
280 series not showing up on the Simpson web site
I see a Simpson 2800 series meter which is basically a display

I meant 260 series

 

[Tim T.]

 

[Crosbyman]

Pretty much the same as a KS meter has used by Telco's years ago noticethe x1 ohms scale.... great for testing points on magnetos

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mine uses a 30 battery $$$$ if you can find them.... is just wired in 3 x 9v batteries inside (lots of room) and it seems to work perfectly

 

[dingbat]

I watched that video but I do not want to spend the money if my old Simpson 260 series can be used as a DVA meter? any ideas?

No, it can not be used as a DVA.
The update rate of the units isn't fast enough to catch the voltage peaks your looking for.

Need to build a DVA adapter from above instructions.

 

[racerone]

Basically you test parts that supply input to the CDI / switch box.----And easy to test coils.----Make for a simple decision on when switchbox / powerpack is good or not.

 

[Crosbyman]

your meter is probably 50 years and will work perfectly reading the AC converted into to DC by the "DVA" adapter which is only a simple rectifier with the condenser that allows the peaks of the sine waves to be accumulated and will give you what you want to know. DC wise.

use the DC 500 V scale

lots of articles on the web

 

[909]

Has anyone here actually made one.

 

[Crosbyman]

not myself....... but has anyone made one and it did not work . ?