Meter for K40 china laser ??

theking
Posts: 19
Joined: Mon Sep 10, 2012 11:08 pm

Meter for K40 china laser ??

Postby theking » Mon Sep 10, 2012 11:42 pm

Hello I bought a digital meter 3 digit Mini Blue LED DC 100mA meter. Ideal for CO2 Laser power indicator(100mA) to replace my analog meter on my k40 mocked laser can I connect him(it) directly the digital meter on the borders of the analog direct replacement either or I have to connect ??
let me know where is conect wire from my digital ? and is possible a work 2 meter at the same time analog and digital ??
Attachments
IMG_06941.jpg
Picture inside my k40

Tech_Marco
Posts: 4350
Joined: Mon Jun 15, 2009 3:00 pm

Re: Meter for K40 china laser ??

Postby Tech_Marco » Tue Sep 11, 2012 12:08 am

Just connect the two input wires (green & blue) in series with the "negative" wire from the PS to the Laser tube Negative side. Make sure not connect it to the HV side or it will blow.

Yes, you can use both Analog and Digital together. Just hook the meters in series and both meter will read

Marco

theking
Posts: 19
Joined: Mon Sep 10, 2012 11:08 pm

Re: Meter for K40 china laser ??

Postby theking » Tue Sep 11, 2012 9:54 am

Tech_Marco wrote:Just connect the two input wires (green & blue) in series with the "negative" wire from the PS to the Laser tube Negative side. Make sure not connect it to the HV side or it will blow.

Yes, you can use both Analog and Digital together. Just hook the meters in series and both meter will read

Marco



To be sure not me wrong I board is a picture of the connection you thought that this is corect?
Dany,
Attachments
IMG_20120911_112650ok4.jpg
IMG_20120911_112622ok3.jpg
IMG_20120911_112533ok1.jpg
IMG_20120911_112518ok2.jpg

Tech_Marco
Posts: 4350
Joined: Mon Jun 15, 2009 3:00 pm

Re: Meter for K40 china laser ??

Postby Tech_Marco » Tue Sep 11, 2012 10:07 am

You need to put two meters in "series", not in parallel.
if you put two meter in parallel, you will see "half" current.

Should do it in series Tube(Neg) -----[+ Amp1 -] ----[+ Amp2 -] ------ PS Negative

Marco


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