Kit Model : VOT-8
Operating voltage : 3.5 ~ 25V
PCB Size : 33 * 52mm
Measuring range : 0 ~ 30V
Accuracy : 0.1V
VOT-8 voltmeter kit consists button switch control can work in two-wire or three- wire system in the state . ( Terminals shipped configured for two-wire )
Two-wire ( measured by the voltage of VOT-8 -powered ) , the measurement range of 3.5 to 25.
Three-wire ( from 3.5 ~ 25V voltage of a group of VOT-8 -powered ) , the measurement range is 0 ~ 30V.
2 Then solder capacitors, diodes, potentiometers, etc.
1 . The first resistance welding 10 (front three , red back welded box 7 ) .
2 Then solder capacitors, diodes, potentiometers, etc. .
3 button switch welding ( note direction ) .
4 IC socket weld , install from the back of the board. Then weld the front of the board ( cut off the excess pin IC holder to prevent the pin to withstand digital . )
5 . Install digital
6 Install microcontroller and pillars ( note SCM direction )
7 production line clip
8 Finally calibrated voltmeter :
Voltage profile with a multimeter or a known voltage of the voltage source , adjust the calibration potentiometer VR1