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Simple Servo Tester

Nice SMD soldering exercise

Simple Servo Tester
This small test circuit is a handy aid for anyone who frequently works with servos. It is often sufficient that you can connect a servo to this circuit and try with a potentiometer whether the servo operates properly over its entire range.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor 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.

(all SMD 0805)
R1 = 24kOhm, 5%
R2 = 1 kOhm, 5%
R3 = 15kOhm
R4 = 243kOhm
R5 = 681kOhm
R6 = 1MOhm
P1 = 10kOhm linear potentiometer
C1,C2,C3,C4 = 100nF
C5 = 47µF 25V (e.g. Panasonic EEEFT1E470AR)
C6 = 10µF 50V (e.g. Panasonic EEEFT1H100AR)
D1 = 30V 0.5A Schottky diode, SOD323 case (e.g. Diodes Inc. B0530WS-7-F)
IC1 = LTC6992CS6-1, 6SOT-23 case, Linear Technology
IC2 = MCP6002-I/SN, SOIC8 case, Microchip
IC3 = MC7805BDTG, DPAK case, On Semiconductor
K1 = 2-pin pinheader, 0.1’’ pitch
K2 = 6-pin pinheader, 0.1’’ pitch
P1 = 2-pin pinheader, 0.1’’ pitch
PCB # 120542-1
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