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.

| Clique na imagem para ampliar |

Supercapacitor charger LTC3225 (CB15570E)
More and more supercapacitors are being used as supplementary sources of energy in several...
RF Switch with Varactor Diodes (CB24707E)
Varactor diodes are our varicaps of today. This circuit for switching signals in an RF circuit was found...
Current Limit (CIR035)
In this circuit the output current is limited by R3. For a 300 mA current, R3 must have 12 Ω. For...