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Model Trains Circuits   Page 5
Model Trains:  #'s       A       B - C       D - E       F - G       H - K     
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Last Updated on: Wednesday, December 20, 2017 05:05 AM


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
Fast Acting Electronic Circuit Breakers -  The circuit breakers on this page make use of the Zetex - ZXCT-1009 "High Side Current Monitor' integrated circuit. The circuits have variable trip current settings and are designed for low current applications.  Two circuit breaker designs are shown; The first has its power isolation device on the Low or common side of the circuit while the second has it isolation device on the High or supply side of the circuit. Both designs use MOSFET isolation devices. [from Rob Paisley's Model Train web site]
Fast Electronic Circuit Breaker -  The circuit on this page is for a fast acting electronic circuit breaker for use with fixed and variable, low voltage AC and DC systems such as model railroad throttles. The circuit breaker's trip current setting has an adjustable range of 0.5 to 10 amps. [from Rob Paisley's Model Train web site]
Fast Electronic Circuit Breakers For AC And DC Throttles -  The circuit on this page is for a fast acting electronic circuit breaker for use with fixed and variable, low voltage AC and DC systems such as model railroad throttles. The circuit breaker's trip current setting has an adjustable range of 0.5 to 10 amps. [from Rob Paisley's Model Train web site]
Files For The Original MiniDCC© System -  This page shows schematics and diagrams for a MiniDCC© system that was built for my personal use. [from Rob Paisley's Model Train web site]

Finding Bad Joints In Track Wiring -  The following is a method of finding high resistances in track power circuits. The digital voltmeter is set to its lowest range and indicates the resistance in the track circuit by measuring the voltage drop in a given section of track....Circuit for model railroad trains…. [from Rob Paisley's Model Train web site]
Finding The Resistance Of Meter Coils -  Circuit for model railroad trains…. [from Rob Paisley's Model Train web site]
Fine Print Section for Transistor Throttles -  This page will show a number of variations on transistor type throttles. The throttles range from 'tried and true' types to 'experimental' designs.  Scroll to this one…. [from Rob Paisley's Model Train web site]
First Across The Line - Race Timers -  Circuit for model railroad trains…. [from Rob Paisley's Model Train web site]
First Across The Line Race Timers -  The next 2 diagrams are for circuits that indicate which phototransistors was covered first. The first is simple while the second has an automatic reset feature…. [from Rob Paisley's Model Train web site]
Fixed 50% Output Duty Cycle Using Logic Devices -  Uses the LM555 timer or its cousins with other letter prefixes. There can be minor differences between 555 timer IC's from different manufacturers but they all should be useable for any circuit.   Designed for Model Trains…. [from Rob Paisley's Model Train web site]
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Fixed Voltage Regulators -  5 or 12 Volt supply….Scroll to find this design....Circuit for model railroad trains…. [from Rob Paisley's Model Train web site]
Flashing Railroad Lights -  This circuit flashes two red LEDs for a model railway crossing.
Flashing Rear-End Device For DCC Systems -  This circuit is for a "F.R.E.D." that is designed to be used with DCC control systems. The circuit is based on the LM555 timer chip. [from Rob Paisley's Model Train web site]
Full and Half-Wave DC Test Throttle -  The next throttle is one that was put together for testing purposes only. As can be seen it is a modification of the basic transistor throttle shown above. The SPDT switch allows the throttle to have a full or half wave DC output…. [from Rob Paisley's Model Train web site]
General Purpose - DCC Booster Circuit #2 (LMD 18200) -  The second schematic is for a 3 Amp - DCC Booster with automatic shutdowns for DCC signal failure and high current loads.  This circuit also uses the LMD 18200 CMOS, H-Bridge….  This page features H-Bridge circuits used for controlling direct current motors - scroll to find this one…. [from Rob Paisley's Model Train web site]
General Purpose Block Occupancy Detector information -  This page presents block occupancy detector designed for general purpose use on systems where the polarity of the power to the track is reversible. [from Rob Paisley's Model Train web site]
Grade Crossing Bell Ringer (LM555) -  This is an updated version an LM555 timer based - Grade Crossing Bell Ringer - circuit that was built for the London Model Railroad Group. The circuit drives a warning bell that is shown on the page….Circuit for model railroad trains…. [from Rob Paisley's Model Train web site]
Grade Crossing Bell Ringer Circuit -  This circuit is a driver for a mechanical - Grade Crossing Bell Ringer - that was originally built for the London Model Railroad Group. [from Rob Paisley's Model Train web site]
Grade Crossing Flasher Circuit -  The circuit uses a bidirectional time delay that staggers the gates and lights so that they operate as would be seen at a typical crossing. [from Rob Paisley's Model Train web site]
Grouped DCC Block Occupancy Detectors -  This page shows a successful attempt to operate block occupancy detectors for DCC systems in a closely spaced group and with cabled wiring.  All of the detectors in this test functioned correctly with no evidence of interference between units. The detection sensitivity of the circuit is just under one milliamp….Circuit for model railroad trains…. [from Rob Paisley's Model Train web site]
Model Trains:  #'s       A       B - C       D - E       F - G       H - K      L - M      N - Q        R - S       T        U - Z


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