transistors - Avalanche Pulse Generator: Common-collector alike setup with no input and fairly high voltage on the Common - Electrical Engineering Stack Exchange
Question regarding operation of a pulse generator circuit with 3 transistors (exercise 2.3 art of electronics) - Electrical Engineering Stack Exchange
Three Output Pulse Generator Circuit for Digital Circuits
Pulse Circuits - Quick Guide
Avalanche pulse generator circuit
Circuit Collection of the Programmable Unijunction Transistor (PUT) . : 16 Steps - Instructables
How to Build a Ramp Generator with Transistors
Stable pulse generator uses matched transistors in a current mirror - EDN
a neat little pulse generator circuit I like
PWM Pulse Signal Generator Circuit Using LM358 Op-Amp IC