VCO without varicap (CB9435E)

This circuit was found in a 90s RF Design. It is an oscillator that can reach 800 MHz, with the frequency controlled by an input voltage.

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Preamplifier for 30 MHz (CB10057E)
This low noise preamplifier has a gain of 19 dB in the 30 MHz band. The circuit is from the 80s....
Sensor Amplifier with Strobe (Cb19988E)
The purpose of the strobe circuit in this sensor amplifier is to reduce consumption. The circuit is...
Photodiode Amplifier 741 (CB14644E)
The amplifier gain shown in the figure is given by R1. The circuit is valid for other photodiodes and is...