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Barry S Moore | all galleries >> Galleries >> Macro wanderings > 200kHz oscillator
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200kHz oscillator

I build my first surface mount device circuit shown here.
It is a square wave oscillator running at 200kHz.
The IC (a Schmitt trigger inverter chip) has a
rise and fall time of only 2 nanoseconds.
The pitch of the pins on the IC is 0.65mm.
A ball point pen will give you the scale.
more info at

Panasonic Lumix DMC-ZS20
1/50s f/3.3 at 4.3mm iso400 (P1030564lable.JPG) full exif

other sizes: small medium original auto
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Martin Lamoon06-Mar-2015 08:00
Thats certainly small! great work.
Helen Betts06-Mar-2015 06:20
Wow, that is very impressive, Barry! I'm glad you included the pen because I never would have imagined it was that small. Well detailed capture, too. V.