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Chip carrier test – Circuit Schematic
Chip carrier test
VA-RICH Power consumption: -2V current draws 34 mA, +2V current draws 5 mA. Total power comsumption is 68 mW. Spark protection: Spark protection works, but t...
Chip carrier test – Circuit Schematic
Chip carrier test
VA-RICH Power consumption: -2V current draws 34 mA, +2V current draws 5 mA. Total power comsumption is 68 mW. Spark protection: Spark protection works, but t...
Light/Dark Detector relay – Circuit Schematic
Light/Dark Detector relay
This handy little circuit can tell the difference between darkness and light, making it very useful for switching on and off signs, porch lights or other things...
Light/Dark Detector relay – Circuit Schematic
Light/Dark Detector relay
This handy little circuit can tell the difference between darkness and light, making it very useful for switching on and off signs, porch lights or other things...
Video Operated Relay – Circuit Schematic
Video Operated Relay
Many Video Operated Relay (VOR) circuits have been published in recent years for use in connection with ATV repeater controllers or automatic videotape logging ...
Video Operated Relay – Circuit Schematic
Video Operated Relay
Many Video Operated Relay (VOR) circuits have been published in recent years for use in connection with ATV repeater controllers or automatic videotape logging ...
Rocket Launch Camera Triggers – Circuit Schematic
Rocket Launch Camera Triggers
To sense a rocket launch, this clip is simply clipped onto one of the fins of the rocket. The cable is taped or tied to a leg or other part of the launch pad, ...
Rocket Launch Camera Triggers – Circuit Schematic
Rocket Launch Camera Triggers
To sense a rocket launch, this clip is simply clipped onto one of the fins of the rocket. The cable is taped or tied to a leg or other part of the launch pad, ...
Infra-red Level Detector – Circuit Schematic
Infra-red Level Detector
This circuit is useful in liquids level or proximity detection. It operates detecting the distance from the target by reflection of an infra-red beam. It can sa...
Infra-red Level Detector – Circuit Schematic
Infra-red Level Detector
This circuit is useful in liquids level or proximity detection. It operates detecting the distance from the target by reflection of an infra-red beam. It can sa...
8 Photo-Detector Circuit Board – Circuit Schematic
8 Photo-Detector Circuit Board
The circuit on this page is for a simple light detector circuit board that has 8 detectors that can be used with visible or infrared light systems. The detector...
8 Photo-Detector Circuit Board – Circuit Schematic
8 Photo-Detector Circuit Board
The circuit on this page is for a simple light detector circuit board that has 8 detectors that can be used with visible or infrared light systems. The detector...
Visible and Infrared Light Detectors – Circuit Schematic
Visible and Infrared Light Detectors
The sensors used are silicon phototransistors and Cadmium Sulfide (CdS) photocells. Both of these sensors allow less current to flow when they are dark than whe...
Visible and Infrared Light Detectors – Circuit Schematic
Visible and Infrared Light Detectors
The sensors used are silicon phototransistors and Cadmium Sulfide (CdS) photocells. Both of these sensors allow less current to flow when they are dark than whe...
Across The Track Infrared Detectors – Circuit Schematic
Across The Track Infrared Detectors
This page presents information on infrared - `Across The Track` train detection circuits. The circuits are designed around the LM339 comparator chip and can use...
Across The Track Infrared Detectors – Circuit Schematic
Across The Track Infrared Detectors
This page presents information on infrared - `Across The Track` train detection circuits. The circuits are designed around the LM339 comparator chip and can use...
Multi Wire Cable Tester – Circuit Schematic
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...
Multi Wire Cable Tester – Circuit Schematic
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...
220V live wire-in-wall scanner – Circuit Schematic
220V live wire-in-wall scanner
This little circuit will help you to scan the line of a 220V live wire in the wall. The FET gate is connected to a capacitive metal sensor (which is usually a s...
220V live wire-in-wall scanner – Circuit Schematic
220V live wire-in-wall scanner
This little circuit will help you to scan the line of a 220V live wire in the wall. The FET gate is connected to a capacitive metal sensor (which is usually a s...