3-decade VCO (CB21326E)

This circuit generates signals from 10 Hz to 10 kHz. We found it in a Popular Electronics from the 90's. The components admit equivalents.

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Constant current pulse generator (CB7879E)
Found in a 1965 Electronic Design, this circuit generates adjustable pulses between 200 uA and 10...
L200 High Voltage Input and Output Regulator (CB15145E)
We found this circuit in the 1982 SGS Linear Integrated Circuits manual. The transistor supports...
Electronics Bench (CB17446E)
This circuit can equip the electronics practitioner's bench with an excellent number of resources. In...