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Incline Railway Project – Circuit Schematic
Incline Railway Project
The drawings and photos below are for an operating incline railway that was built by the London Model Railroad Group for its `O` scale model railway club locate...
Incline Railway Project – Circuit Schematic
Incline Railway Project
The drawings and photos below are for an operating incline railway that was built by the London Model Railroad Group for its `O` scale model railway club locate...
Digital Timer Light Switch – Circuit Schematic
Digital Timer Light Switch
Typical circuit representative of those used in most light switch type digital timers. The timer module is normally a PIC or custom chip, and it syncs to the AC...
Digital Timer Light Switch – Circuit Schematic
Digital Timer Light Switch
Typical circuit representative of those used in most light switch type digital timers. The timer module is normally a PIC or custom chip, and it syncs to the AC...
555-based solar engine – Circuit Schematic
555-based solar engine
Wilf Rigter simplified this circuit a bit, made it phototropic, and doubled it up to yield a photopopper design in a post later the same day. I`ve got this d...
555-based solar engine – Circuit Schematic
555-based solar engine
Wilf Rigter simplified this circuit a bit, made it phototropic, and doubled it up to yield a photopopper design in a post later the same day. I`ve got this d...
Time Delay Relay – Circuit Schematic
Time Delay Relay
A time delay relay is a relay that stays on for a certain amount of time once activated. This time delay relay is made up of a simple adjustable timer circuit w...
Time Delay Relay – Circuit Schematic
Time Delay Relay
A time delay relay is a relay that stays on for a certain amount of time once activated. This time delay relay is made up of a simple adjustable timer circuit w...
Timed Beeper – Circuit Schematic
Timed Beeper
Beeps 7.5 seconds after a preset time Adjustable time settings: 15 s. 30 s. 1 min. 2 min. & others This circuit is intended for alerting purposes after a c...
Timed Beeper – Circuit Schematic
Timed Beeper
Beeps 7.5 seconds after a preset time Adjustable time settings: 15 s. 30 s. 1 min. 2 min. & others This circuit is intended for alerting purposes after a c...
Power-On Time Delay Relay – Circuit Schematic
Power-On Time Delay Relay
Here`s a power-on time delay relay circuit that takes advantage of the emitter/base breakdown voltage of an ordinary bi-polar transistor. The reverse connected ...
Power-On Time Delay Relay – Circuit Schematic
Power-On Time Delay Relay
Here`s a power-on time delay relay circuit that takes advantage of the emitter/base breakdown voltage of an ordinary bi-polar transistor. The reverse connected ...
Tan Timer – Circuit Schematic
Tan Timer
This timer was designed for people wanting to get tanned but at the same time wishing to avoid an excessive exposure to sunlight. A Rotary Switch sets the timer...
Tan Timer – Circuit Schematic
Tan Timer
This timer was designed for people wanting to get tanned but at the same time wishing to avoid an excessive exposure to sunlight. A Rotary Switch sets the timer...
Jogging Timer – Circuit Schematic
Jogging Timer
This circuit was developed since a number of visitors of this website requested a timer capable of emitting a beep after one, two, three minutes and so on, for ...
Jogging Timer – Circuit Schematic
Jogging Timer
This circuit was developed since a number of visitors of this website requested a timer capable of emitting a beep after one, two, three minutes and so on, for ...
Amplifier Timer – Circuit Schematic
Amplifier Timer
This circuit turns-off an amplifier or any other device when a low level audio signal fed to its input is absent for 15 minutes at least. Pushing P1 the device ...