Michaelo
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Michaelo As I can't edit my comment I decided to add some more information...I'm using the kit with an 18 volt mains transformer to avoid any issues with op-amp maximum voltage being exceeded... The other option would be to upgrade the op-amps to TLE2141 (will handle 44 volts supply)...If you choose to use a 24 volt transformer, you will exceed the maximum supply of the current op-amps and this may result in the unit failing...

Michaelo 13/01/2016
The kit is as described... The PCB is a nice quality and the silk screen identifiers parts layout making it easy to assemble... Would have liked screws and nuts to mount power transistors but you can't have everything... Most people won't use the 24 volt regulator for the fan as most fans are 12 volt... an option of a 12 volts regulator instead would have been nice...
0-30V 2mA - 3A Adjustable DC Regulated Power Supply Module DIY Kit
0-30V 2mA - 3A Adjustable DC Regulated Power Supply Module DIY Kit
US$4.99 US$9.59
3
Comments (1)

Michaelo I was aware with the voltage issue having read about it on several forums but opted to buy an use an 18V AC transformer (giving me about 24 volts). Nice to have the alternative opamps... might change to these...

pborut 14/10/2015
Very lovely, school grade design, simple to assemble, fine operation, bought two of them. However, technical specification for max voltage should be lower. When I connected it to 24V AC transformer one operational amplifier burnt practically immediately. After reviewing schematics, it was quickly clear. Op amp TL081 is specified at +-18V max power supply (36V). In this design, power supply voltage
0-30V 2mA - 3A Adjustable DC Regulated Power Supply Module DIY Kit
0-30V 2mA - 3A Adjustable DC Regulated Power Supply Module DIY Kit
US$4.99 US$9.59
17
Comments (1)

Michaelo Don't appear to be able to calibrate this device which is a major disappointing...

Michaelo 25/12/2015
A very nice little unit, well packaged and included cables are very good quality too... Have not yet checked calibration as I don't have a good enough voltage reference... If you are checking voltages using your multimeter make sure it's precise...
iMAX B6 Digital RC Lipo NiMH Battery Balance Charger
iMAX B6 Digital RC Lipo NiMH Battery Balance Charger
US$21.99 US$35.99
0
Comments (1)

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