Hallicrafters HP-1 Over-voltage Diagnosis & Upgrade

figuring out why an old low-voltage power supply kit is putting out double the listed voltage

July 3, 2022

hallicrafters-hp-1 hallicrafters power-supply restomod

Dim Bulb Tester

building a compact dim bulb tester

June 15, 2022

project-box lab power-supply vacuum-tube

ATtiny Board for Noisy Power Environments

January 20, 2022

attiny avr-mcu emf pcb power-supply radio-control