Spring Holidays

Works Closed

27th May-31st May

P&M Services (R) Ltd

Printed circuit board Manufacturer, Photoplotting Established 1964  All types of Pcb, surface mount sm, PTH, SS single     UK Printed Circuit Board manufacturers. UK PCB Manufacture since 1964. single sided SS PCB, PTH PCB, IMS PCB, PCB JPG, DFX PCB

ML multi layer printed circuit board  prototypes. Cheap high quality PCBs Printed circuit boards. Fast cheap UK Prototype PCB

Printed circuit boards tooled up from Gerber,JPG,DXF,and most common file types, or camera ready artworks either 2:1 or 1:1 std scale.

• Home Page • Return • About Us • Web Links • Main Index •


  Section Menu




P & M'S  Ohms Law V=IR Calculator.


Please feel free to download our Ohms Law  Spreadsheet Calculator. It was written using Microsoft Excel. As an added bonus it also includes the formula for calculating parallel resistor values. Regretfully like most things, although we believe the spreadsheet to be accurate you must accept any liability resulting from its use.

To simplify its usage unlike the track resistance spreadsheet, this one runs a small amount of Visual basic code in the background. To fully allow all functions, macros will need to be enabled. Although the sheet runs protected and locked, no password has been set. 




20k Zipped File

77k xls file





 Current Calc Technical Main



UK Flag


Copyright P. & M. Services (Rochdale) Ltd


 Rev  18 April 2024

 Registered No 0853754 (England).