- on Test & Measurement
- Published in issue 11/2003 on page 0
Electric Charge Meter
In search of the Coulomb
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.
Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.
R1,R2,R3 = 27k?
C1,C2 = 100nF
IC1 = TLC272
K1 = PCB solder pin
K2 = connection for moving-coil or multimeter
K3 = connection for 9-V battery (with clipon connector)
S1 = pushbutton, 1 make contact
PCB, order code 030018-1 (available from The PCBShop)