Transistor Relaxation Oscillator Circuit – Simple Vehicle Blinker / Flasher
Learn how a transistor relaxation oscillator works as a 12V vehicle blinker/flasher with a relay-less 3-transistor circuit for incandescent. Read more
Oscillator circuits & RF
Ring Oscillator Circuit: How It Works and Frequency Calculation
Learn how a ring oscillator works, including circuit and frequency formula. Understand propagation delay time and how it affects oscillation. Read more
Logic Gate Astable Multivibrator — How It Works and Example Circuits
How do logic gates make oscillators? Learn how a logic gate astable multivibrator works using NAND, NOR, and NOT gates with simple diagrams. Read more
Two-Transistor Common-Emitter Amplifier with Current-Boost Output
Common-emitter amplifier with emitter follower output stage for higher current drive and stable signal output. Tested and measured results. Read more
Simple Single-BJT Colpitts Oscillator – LC Sine Wave Generator
Learn how a basic LC tank circuit works and build a simple single-transistor (BJT) Colpitts oscillator to generate a clean sine wave. Read more