Circuits & Projects

Delay on Release Circuit - This circuits is non powered and will provide approx. 6 minute time delay.
Status Monitor Pager System - This system uses the Basic Stamp 2 to provide a pager notified status monitor.
Audio/Telco Line Tracing Beeper - This project is used to tracing and testing audio and telco lines and cabling.
DTMF Decoder - 20 output DTMF Decoder circuit.
AC (Audio) Voltmeter - Portable AC voltmeter project for audio testing.
10 A. Power Supply Dummy Load - Variable load dummy load for power supply testing.
VU Matrix Monitor - This unit has 4 VU meters and monitors L, R, L+R (Sum) and L-R (Difference)of a stereo source simultaneously.
3 Output RS232 Modem Splitter - connects one 25 pin DB25 modem (DCE) to 1, 2, or 3 25 pin DB25 terminals (DTE).
Composite Audio Remote Control - Uses Telos Zephys to control remote composite switching relay.
Timer Switch Control - for automated control of a Cassette or Reel Recorder.
Air Checker Interface - for the Denon DN-720 Cassette Deck.
480V 3-Phase Line Voltage Monitor - for interfacing to a transmitter site remote control.
Belar AMM-3 Remote Overmodulation Indicator - for remote visual & aural indication of overmodulation for adjusting audio processing.
AC Power Failure Detector - counts the number of AC power failures since last reset.