NPN Switched VCO

Description

this voltage controlled oscillator is implemented with two operational amplifiers TL082 and a transistor NPN Q2SC1815. This device consists of three main stages. the first stage is an integrator, the second stage is a Schmitt trigger and the final stage is a NPN transistor used as switch. The input to the circuit is a DC voltage, it can range from 0.2V to 29V providing a signal frequecy from 300hz to 35khz, with a integrator capacitor fixed to 1nF.

• Project Type: Free
• Complexity: Simple
• Components number: 21-30
• SPICE software: PSpice
• Software version: 16.5+
• Full software version nedeed : No
• Screenshots simulation images: