Englewood, New Jersey—A series of four sweep-function generators and one pulse generator is now available from Protek Test and Measurement. The instruments are 2-MHz, 4-MHz, 10-MHz, and 20-MHz models.

Fig 1. This basic VCO/waveform generator IC circuit includes a voltage follower loop (formed with IC1) and symmetry feedback loop (IC3) to eliminate an asymmetric duty cycle, which would cause ...