Tools
A series of useful formulae for the electronics engineer:-
Formula - PPM/DegC
Formula - PPM
Formula - Op-Amp Gain (inverting)
Formula - Op-Amp Gain (non-inverting)
Formula - Time / Hz
Formula - mm to mils
Formula - Parallel Resistors
Formula - Voltage Divider
Formula - LM317
Formula - Ohms Law
Formula - Zener Diode