30_Hz_SAWTOOTH

Published:2009/7/13 6:14:00 Author:May | From:SeekIC

Uses neons as relaxation oscillator for producing sawtooth wave required for monitor scope of SSB transmitter. Rate at which C1 charges depends on its value and those of R2 and R3. When C1 charges to breakdown voltage of neon string, around 70 V per tube, neons fire and C1 discharges through them. C1 then starts charging again, to give sawtooth output. Voltage source should be about 500VDC, and R1 at least 500K. For greater sweep width, increase number of neons in series.-D. Schmarder, A Simple Sweep Generator for Monitor Scopes, 73 Magazine, Feb. 1974, p 32.



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