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Model Trains Circuits   Page 1
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Last Updated on:
Tuesday, April 01, 2014 04:29 AM


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

"H" Bridge Direct Current Motor Control Circuit (LM311) -  This page features H-Bridge circuits used for controlling direct current motors. Several designs are shown using both CMOS and Bi-Polar power devices….scroll to view all of the circuits…. [from Rob Paisley's Model Train web site]
1.5 Volt Power Supply - LM317 -  This circuit is for a 1.5 Volt power supply using the LM317T Adjustable Voltage Regulator.….Scroll down for this design....Circuit for model railroad trains…. [from Rob Paisley's Model Train web site]
10 Amp - 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]
10, 8 And 6 Step LED Circuits (CD4017) -  Each time switch S1 is closed the count on the CD4017 advances by 1 step and the coresponding LED turns on….Circuit for model railroad trains…. [from Rob Paisley's Model Train web site]
2 Amp - DCC - Accessory Booster -  Circuit for model railroad trains…. [from Rob Paisley's Model Train web site]
2 Amp DCC Stationary Decoder Booster (L293B) -  Circuit for model railroad trains…. [from Rob Paisley's Model Train web site]
2 Tone Train Horn -  With this circuit you can electronically simulate the noise of a diesel-train horn. The sound is triggered automatically as the train reaches a desired place on the track so you can produce the sound as the train approaches stations, level crossings, etc. The circuit can be built simply by using one 556 or two 555 timers....[Tony van Roon's circuit]
3 Amp DCC Booster (LMD18200) -  The DCC booster shown on this page uses the LMD18200 motor driver H-bridge IC. The booster's designed output rating is 3 amps at 15 volts.  This booster was developed from the one shown on the My MiniDCC© System page at this site…. [from Rob Paisley's Model Train web site]

3 Amp Three Terminal Regulator Type Throttle E+F -  The schematic above is of a Three Terminal Regulator (TTR) design based on a LM350K regulator which has a 3 Amp current rating as opposed to the LM317K with a 1.5 Amp rating. [from Rob Paisley's Model Train web site]
3 Light Signals -  This page presents a 3 Light signal control circuit for model railroads. The circuit produces only solid Red, Yellow and Green signal indications. The circuit can be wired for NORMAL and APPROACH type lighting of the Green signal. [from Rob Paisley's Model Train web site]
3 Position Servo Driver Circuit (LM555) -  This circuit uses an SPDT toggle switch to select One-of-Three positions for a servo motor….Scroll down to find this design….Circuit for model railroad trains…. [from Rob Paisley's Model Train web site]
324 OpAmp Stall-Motor Switch Machine Drivers -  The circuits on this page are switch machine drivers that can be used to operate Stall-Motor type switch machine motors. The circuits use LM324 Quad or 358 Dual operational… [from Rob Paisley's Model Train web site]
3Amp - DCC Booster Circuit #1 (LMD 18200) -  The first schematic is for a basic 3 Amp - DCC Booster using the LMD 18200 CMOS, H-Bridge.   Included in the design is a 5Volt regulator that supplies power to the DCC signal generation and display circuitry….  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]
4 & 8 Infrared-Proximity Detectors (TSOP4830) -  In this circuit the TSOP4830 is used as a sensitive infrared detector that does not require shielding from room lighting. The detector will work under almost any lighting condition from complete darkness to full sunlight….scroll down for this one…. [from Rob Paisley's Model Train web site]
4 Photo-Detector With Delayed Release And Bipolar Output -  The circuit on this page is for a visible and infrared light detector circuitboard that has 4 independant detectors. The inputs are sensed by LM339 voltage comparators and the outputs are from LM556 timers…. [from Rob Paisley's Model Train web site]
5 Second Ramp Generator for Locomotive Sound Card Demonstration -  The circuit on this page is designed to produce a timed throttle output for demonstrating on board sound systems in a large scale locomotive….. [from Rob Paisley's Model Train web site]
5 Times Around Circuit -  The 5 Times Around circuit was designed to automatically let an N Scale locomotive and car travel around a loop 5 times and stop for approximately a minute and then repeat the cycle. [from Rob Paisley's Model Train web site]
50% Output Duty Cycle (Fixed) 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]
50% Output Duty Cycle (Variable) -  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]
555 Timer Current Draws -  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]
555 Timer Output Section -  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]
556 Switch Machine Driver -  The circuits on this page are switch machine drivers that can be used to operate Stall-Motor type switch machine motors. The circuits use LM556 dual timer chips to provide a PUSH-PULL output to reverse the polarity of the supply to the switch machine motors. [from Rob Paisley's Model Train web site]
556 Timer Stall-Motor Switch Machine Drivers -  The circuits on this page are switch machine drivers that can be used to operate Stall-Motor type switch machine motors. The circuits use LM556 dual timer chips to provide a PUSH-PULL output to reverse the polarity of the supply to the switch machine motors. [from Rob Paisley's Model Train web site]
6 Aspect-Searchlight Signal Driver (LM555) -  The circuit on this page is a 6 Aspect driver for a bicolour LED type Searchlight Signal. The available signal indications are; SOLID - RED, YELLOW, GREEN, and FLASHING - RED, YELLOW and GREEN. The circuit can also turn the signal OFF for approach lighting if desired. [from Rob Paisley's Model Train web site]
74194 BIPOLAR Stepper Motor Driver Circuit Circuitboards and Parts -  This page features simple and inexpensive, stand alone BIPOLAR stepper motor driver using parts that are available from many sources.   The driver is designed for medium and low speed applications with motors that draw up to 0.6 amperes per phase…. [from Rob Paisley's Model Train web site]
74194 UNIPOLAR Stepper Motor Driver Circuit Circuitboards and Parts -  This page features a Bipolar stepper motor driver using three ICs. The circuit can be used to drive relatively low speed applications at currents up to 0.6 amperes per phase. The circuit uses parts that are available from a variety of sources. [from Rob Paisley's Model Train web site]
8 Photo-Detector Circuit -  There are two versions of the "8 Photo-Detector" circuitboard. Circuitboards and parts are available for both versions of this circuit....[from Rob Paisley's Model Train web site]
8 Photo-Detector PCB Inverting -  The circuit on this page is for a visible and infrared light detector circuitboard that has 8 detectors. LM339 voltage comparators are the active element.   These detectors can be used as part of other light detector circuits…. [from Rob Paisley's Model Train web site]
8 Photo-Detector PCB Non Inverting -  The circuit on this page is for a visible and infrared light detector circuitboard that has 8 detectors. LM339 voltage comparators are the active element…. [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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