Tools and measuring circuit diagrams
Pulse-Generator & Signal-Tracer
Dual-purpose test-instrument. Very simple circuitry, 1.5V Battery-operated Read more...
Logic Probe
This logic probe uses a single CMOS 4001 IC and can display high, low and pulsing outputs. Read more...
Live-line Detector
Detects the presence of a live mains conductor Minimum parts counting Read more...
Digital Remote Thermometer
Remote sensor sends data via mains supply Temperature range: 00.0 to 99.9 °C Read more...
Multi Wire Cable Tester
A multi wire cable tester with a separate LED for each wire. Will show open circuits, short circuits, reversals, earth faults, continuity and all with four IC's. Designed initially for my intercom, but can be used with alarm wiring, CAT 5 cables and more. Read more...
Self-powered Fast Battery-Tester
Tests 1.5 to 15 Volt cells Two-LED display, no power supply required Read more...
E-B-C Transistor Pin Identifier
Tests transistors and diodes for polarity. Simple circuitry - 9V Battery operation Read more...
LF Crystal Controlled Oscillator
The RF engineer sometimes has to look for an instrument that will check a low frequency quartz crystal unit reliably and rapidly. This is a difficult piece of equipment to find and the engineer often has to consult an electronic circuits handbook for the schematic of a circuit that will perform the task. Read more...
