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Back And Forth - Bipolar Stepper Motor Driver - This circuit was
developed as a driver for an air valve. The stepper motor was used as it
could cycle faster than a standard solenoid…. [from Rob Paisley's Model
Train web site] |
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Bad And Good Circuit Board Solder Joints - The following images
show what bad and good solder joints should look like….. [from Rob Paisley's
Model Train web site] |
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Basic Circuits For The LM555 Timer - 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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Basic Electronics For Model Railroads - This pages in this section
of the site will present basic information about electronics for Model
Railroaders. Pages will be posted with information on various components and
simple circuits that a model railroaders are likely to use in their hobby.
[from Rob Paisley's Model Train web site] |
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Basic Infrared Proximity Detector - The circuits on this page are
for an Infrared Proximity Detector using the Vishay Electronics TSOP4830 "IR
Receiver Modules for Remote Control Systems"….Scroll down to view all the
circuits…. [from Rob Paisley's Model Train web site] |
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Basic Throttle with Unplugable Walk Around Control - 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] |
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Basic Infrared Light Train Detection - In the circuit bellow the LED will
turn on when the infrared beam is broken. The value of the resistor R1 determines the
sensitivity of the phototransistor Q1. In most cases a value of 1 Meg or 470K ohm with
good results but every situation is different and some experimentation might be
needed....[from Rob Paisley's Model Train web site] |
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Battery Tester - The circuit on this page is for a rechargeable battery
tester using a LEGO® RCX Brick to gather voltage verses time data and then upload the
data to a PC using the ROBOLAB Software. [from Rob Paisley's Model Train web site] |
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Bell Ringer - 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] |
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Bipolar LED Driver - 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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BIPOLAR Stepper Motor Driver (74194) - 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] |
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Block Occupancy Detector For DCC Or AC - Two block occupancy detectors using
diodes and voltage comparators. [from Rob Paisley's Model Train web site] |
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Block Occupancy Detector Helper Circuit information - This circuit would be
used to hold a BLOCK OCCUPIED condition as a train passes out of the block even if the
normal detector is not sensing a train. [from Rob Paisley's Model Train web site] |
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CA4060B Timer Circuits - Circuit for model railroad trains…. [from Rob
Paisley's Model Train web site] |
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Capacitor Discharge Power Supplies - This page presents various capacitor
discharge power supply circuits for use with twin coil switch machine motors. Also
shown are some optional wiring methods that can be used to enhance the availability
and control of these supplies…. [from Rob Paisley's Model Train web site] |
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Colour Shifting for Bi-Colour LED's (LM555) - Circuit for model railroad
trains…. [from Rob Paisley's Model Train web site] |
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Comparator Controlled H-Bridge Circuits (LM311) - Circut three and four are
simple Bi-Polar H-Bridge circuits. The bridges are controlled by a pair of LM311
voltage Comparators. The LM311 Voltage Comparator has several unique features, one of
which is an output transistor with an open emitter as well as the typical open
collector. This allows the output transistor of the comparator to sit between
the bases of the power transistors. The LM311 Voltage Comparator also has a
STROBE input that will turn off the output regardless of input conditions. The
circuit is shown in two configurations. The first is a typical two input bridge. The
second circuit has a single - duplex input that would be used for model railroad "DCC"
control applicationsThis page has several circuits....please scroll down to
these....[from Rob Paisley's Model Train web site] |
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Computer Controlled Model Train Set - (electronic circuit added 7/03)
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Controlling Circuits For LM555 Timers - 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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Cross Canceling For Monostable Timers - 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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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] |
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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] |
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Crystal Controlled FM Transmitter - The calculators on this page can be used
to find current limiting resistors and currents for Light Emitting Diodes. The
first calculator determines the resistance for a desired LED current while the second
calculates the current for a given resistance. [from Rob Paisley's Model Train web
site] |
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Current Monitors (High Side ZXCT-1009) - This page shows some basic
information on - High Side Current Monitors such as the Zetex - ZXCT-1009 integrated
circuit. [from Rob Paisley's Model Train web site] |
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Current Regulators For Light Emitting Diodes - The following are current
regulator circuits that can be used to drive light emitting diodes. As always, take
time to do some testing before attempting to use these circuits in actual
applications…. [from Rob Paisley's Model Train web site] |
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Current Vs. Voltage For Various Automotive Lamps - Circuit for model
railroad trains…. [from Rob Paisley's Model Train web site] |
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