OPAMP Multivibrator

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https://www.electronics-lab.com/article/opamp-multivibrator/

Introduction This tutorial will focus on a configuration commonly known as the multivibrator and particularly on op-amps based circuits. Indeed, multivibrators can also be designed thanks to bipolar transistors or also timer integrated circuits such as NE555 but we will focus on OPAMP implementation. In its general definition, a multivibrator is an electronic oscillator that […]

Inverter crystal oscillator

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https://www.electronics-lab.com/inverter-crystal-oscillator/

Vasily Ivanenko build some discrete chip oscillators with 74HC series logic gates and tests them on his oscilloscope. He writes: In numerous RF synthesizer chips lies an inverter with input and output pins for making a reference crystal oscillator clock. I built some discrete chip inverter xtal oscillators with 74HC series logic gates to better […]