Digital Voltage Control (CB6590E)

Found in old Philips documentation, this circuit uses components from the 60's.

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Drum Sound (CB24617E)
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This circuit was obtained from an Application Note from Linear Technology that manufactures the used...
RC Oscillator with 741 I (CB19111E)
This is a well-known RC oscillator configuration using a 741 operational amplifier. The circuit is from...