Conductivity tester schematics

Protect your model railway and eliminate frustrating short-circuit searches with this innovative over-current protection circuit. Easily isolate problem sections and keep your trains moving, ensuring seamless operation and maximum enjoyment of your meticulously crafted layout. Implement this simple, effective solution for a safer, more reliable, and truly inspiring model railway.... [read more]

Detect broken wires quickly and confidently with this innovative circuit! This easy-to-build device uses just a few components—including a CMOS CD4069—to pinpoint broken wires in 1-, 2-, and 3-core cables, saving you time and money. Build your own portable broken-wire detector and eliminate frustrating troubleshooting!... [read more]

Build your own precision continuity tester and unlock the secrets of reliable electrical connections. This DIY circuit, featuring a threshold-adjustable op-amp design, helps you quickly identify good and bad contacts, ensuring optimal performance in your electronics projects.... [read more]

Build precise electronic circuits with this low-resistance continuity tester, ideal for checking soldered joints and connections with a 0.25-4 ohm range. Unlock optimal performance and illuminate your projects with this powerful diagnostic tool.... [read more]

Build a simple circuit with one resistor and an LED to instantly detect fuse failures and safeguard your projects with this innovative design.... [read more]