Volt meter
 

Forgive me for asking this because I know the answer is very simple but I can't seem to remember how to do this. I currently own a very nice volt meter that I would like to setup to monitor the voltage that my servos draw. I just can't remember how to wire it up in series with my servos so that I can read the voltage. Call me stupid but I truly cant remember.


Thanks in advance.

Patrick

RE: Volt meter
 

You can put the meter onto the current scale and place it in series with the posative (+) lead from your battery. set the meter to an appropriate scale. You will need to cut the (+) lead to do this.

Or if your meter does not have a current range then you can place a 1 Ohm resister in series with the posative lead and put the voltmeter accross the 1 Ohm resister. The current is found by the formula I=E/R where E= the voltage read on the meter and R= 1. So for a voltage of say 2volts the current would be 2 amps. The resister should be of sufficent wattage to carry the expected current.

P=I*E so for an expected current of 2 amps the power rating of the resister should be at least 4 watts.

Regards

RE: Volt meter
 

Two easy solutions for you Patrick...


[link=http://www.electrodynam.com/cgi-local/SoftCart.exe/new/EDR-201/index.shtml?L+scstore+tqnl8709ff42bc42+1140480954]THIS[/link]

or

[link=http://dreamworksrc.com/catalog/product_info.php?products_id=278]THIS[/link]

RE: Volt meter
 

Great stuff Todd, I have been doing this for years with bits of wire and old plugs etc. Your meter is perfect.

Regards

RE: Volt meter
 

If you really care about the voltage, then you do NOT connect the meter in series - you connect it in parallel ; you only connect in series for measuring the current, not the voltage.

RE: Volt meter
 

Todd,
I wanted an interim solution that I could hook up quickly with minimum expense. Read the PM I just sent you and you will understand why.



Gordon,
Thanks for the clarification. This is why I ask these questions before I attempt to do any of this. .

Patrick.

RE: Volt meter
 

Understood Patrick ;).... I knew exactly what you where looking for since you where present when I demonstrated the benifits of having such a tool on hand. 40.00 investment may just save your $?0000.00 plane. I know it has for me.
Tommy... one of those "you wont know how you did without it" tools. Good decision ;)
Regards,
Todd