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Electronic circuit : PC Scope Probe

This simple pc scope probe is nothing more than a fet follower. It has a high input impedance and a low output impedance to match a mic or line input socket on a pc or laptop.

Electronic circuit : Monitor Splitter

A Simple Splitter Driving Two (or even more) PC Monitors

Electronic Circuit : Internet Streaming Recording Aid

This small and handy device acts as an interface between your computer sound card and is a complete system for listening to streaming audio from the many thousands on Internet Radio Stations.

Electronic Circuit : PC Output Interface

A versaile output interface that can control external devices direct from your computer. Uses freely available software and works with both windows and Linux.

Electronic Circuit : A Passive Ethernet Hub

I tested this concept on a little network consisting of three PCs running under Windows 2000. It works well. The network adapters are normal Intel and 3Com models, set to 10 Mbps and Half Duplex. The computers are labelled A, B, C, and the UTP cables from the computers to the hub are 10, 16 and 35 meters long, respectively.

Electronic Circuit : R5000 Receiver Interface

This circuit is a modified version of an original interface on QSL Net. It is a fully isolated interface allowing computer control of the Trio/Kenwood R5000 receiver. Separate software is needed to control the receiver.
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