Fast log generator (CB7595E)

We found this circuit in a 90s Popular Electronics. The operational amplifier can be replaced by current equivalents.

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Thermometer for 5V operation with (CB8711E)
Found in a 90s 303 Circuits, this circuit uses the KTY10 sensor, widely used at the time. | Clique na...
Phase Shift Oscillator (CB4373E)
This circuit was found in an English magazine from 1973. The magazine no longer exists, but the...
100 MHz Oscillator (CB12823E)
We found this circuit in an old Argentine publication from the 1970s. The transistor can be the...