Bug Descratcher III kit diagnostic measurements 1/7/2017 Chuck, WB9KZY Measurements made with a Metex 3 1/2 digit DVM They don't need to be exact, ballpark vicinity is fine power ON (9 Volts) supply current: key up: about 6 uA (or .006 mA) key down: 1.58 mA power ON voltage measurements on PIC pins: black probe to ground, red probe to each pin in turn PIC pin # key up key down 1 5 Volts 5 Volts 2 about 0 about 0 3 0 0 4 5 28 mV 5 0 4.94 Volts 6 5 5 7 5 5 8 0 0 power off resistance measurements to ground: PIC removed from socket, black probe to ground red probe connected to each pin in turn PIC pin resistance 1 open (very large resistance) 2 about 1 megohm 3 open 4 open 5 high about 30 megohms 6 open 7 open 8 0