|HP-Bench-Briefs-1965-04-05.pdf|| HP Archive
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HEWLETT ~ PACKARD
April - May 1965 Vol. 6 No.1
HP MODEL 21lA SQUARE-WAVE GENERATOR
Here's a handy circuit you can construct to reverse
the polarity of the 2HA. The values of C and R in
the circuit shown below are typical and will give