Power Supply Suggestions

[fatman]

Any suggestions on what would be an approriate power source for my KHR-2HV?
I noticed 8O that the power unit (the one on sale in this store) for KHR-1 has a 12.5amp rating.
so i am assuming a 10.8V 12A output transformer will do the trick....
but before i plug it in would like to hear what people here think...as i would rather not fry my servos.
any thoughts, suggestions appriciated....

cheers
fatman

[Robo1]

if you check the out put with a voltmeter and it's 10.8 then it should work fine. it can work up to 12V in my experiance.

bren

[Ray]

Open loaded (no connection) transformer usually has higher voltage than its rated voltage.

You MUST measure the open load voltage before you connect !

higher voltage than 12V may burn you robot and servo 8O

[tempusmaster]

You probably already realize this, but there is a huge difference between a 'power supply' and a 'transformer'.

If you don't, and if you really want to plug your robot into a 'transformer' then please wear safety glasses and take some videos of the moment. My guess is that the smoke and possible fireworks could be quite entertaining, and expensive.

[fatman]

ummm sorry for my local coloquism...

specifically i was wanting to know...

a) do i have to regulate the voltage?

i.e does it have to be 10.8V exactly or is an unregulated voltage ok? as with an unregulated supply the voltage will vary depending on load - so a voltage of 10.8 may be 15V+ without load...BAD? OK?

b) what max amps to go with or where a safe place to start would be.

c) aren't transformers robots thats morph into jet fighters and battle tanks?

btw....have dismantled my robosapean ...WOW WEE 8O , its full of goodies (read senors), will keep you posted as they are fitted to KH-2

[heke]

:idea: Any suggestions on what would be an approriate power source for my KHR-2HV?
I noticed 8O that the power unit (the one on sale in this store) for KHR-1 has a 12.5amp rating.
so i am assuming a 10.8V 12A output transformer will do the trick....
but before i plug it in would like to hear what people here think...as i would rather not fry my servos.
any thoughts, suggestions appriciated....

cheers
fatman

I am using an old PC AT-power supply and it's 12VDC output. Works well. Only few amperes are enough in the beginning (not too many servos moving at the same at too high speed), but maybe later you need 10A peak.

[Ray]

buy a switching regulator of 10~12V with output of max.10A is ok.

usually, the average current is around 1 ~ 2A, but in high speed and large loading, 10A peak is necessary.


try:

http://www.rs-components.com/index.html

[fatman]

thanks for all the input...

i have got myself a switching power supply....

9V - 15V, 15A output

as it can be set at 10.8V. i believe it should do the trick, as i understand my robot will only draw what amps it needs therefore i should have ample power
it also has a 7amp limiter on one output so i will start there

again thanks for the help