|
|
|
H-Bridge Direct Current Motor Control Circuits - 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] |
|
Hendeca (11 Step) Resistance Substitution Box - This is an
inexpensive way to make a stepped resistance box using a Single Pole
Twelve Position rotary switch and eleven resistors for each switch. [from
Rob Paisley's Model Train web site] |
|
High Current - Crossing Light Flasher (LM556) - This following
circuit shows a simple grade crossing flasher with enough current capacity
to drive 12 Volt lamps with 2 Amps current draw. The circuit could be used
for open house displays, etc. The flasher is driven by an LM556 dual
time configured in a Push-Pull arrangement…..scroll down for this
circuit....[from Rob Paisley's Model Train web site] |
|
High Current Switch Machine Motor Driver - Circuit for model
railroad trains…. [from Rob Paisley's Model Train web site] |
|
|
|
High Impedance Voltmeter - This circuit is designed to provide an
inexpensive way to to create a High Impedance Voltmeter while making use of an
inexpensive analog or digital multimeter. The circuit is
specifically designed for testing phototransistors when they are used in the circuits
shown at this site. It has a very high input impedance that will not "Load Down" the
sensor that is being checked....Circuit for model railroad trains…. [from Rob
Paisley's Model Train web site] |
|
High Impedance Voltmeter Adapter - Circuit for model railroad
trains…. [from Rob Paisley's Model Train web site] |
|
HIGH or LOW power switch - Circuit for model railroad trains….
[from Rob Paisley's Model Train web site] |
|
HIGH or LOW Power Switch For Lights or Small Motors - Circuit
could be used to operate lights or small motors in either high or low
mode….Circuit for model railroad trains…. [from Rob Paisley's Model Train
web site] |
|
High Side Current Monitor Integrated Circuits - The next circuit
uses an integrated circuit that is specifically designed for this
application. There are a number of manufactures of these devices and there
is also a considerable variety of features that can be had from specific
IC's….Scroll down for this design....Circuit for model railroad trains….
[from Rob Paisley's Model Train web site] |
|
|
|
|
HO Train Model Lighthouse Flasher - HO train sets often have authentic
looking scale model homes and buildings. The hobby circuit below can be mounted
inside a model lighthouse. The electronic circuit drives a single LED lamp in
such a way that it produces light which simulates the rotating light from a lighthouse
beacon. It uses a dual low power op amp IC. …. [Hobby Corner Circuit by Dave
Johnson] |
|
Incandescent LED Circuit - This circuit when used with a 555 timer will
cause light emitting diodes to turn on and off more slowly. This will make the
LEDs ….Circuit for model railroad trains…. [from Rob Paisley's Model Train web site] |
|
Incline Railway Circuit - 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 located at London, Ontario, Canada. This is a single car
model loosely based on a double car incline that operated at Port Stanley, Ontario.
[from Rob Paisley's Model Train web site] |
|
Infrared Detection - The following is a method to allow day and night
detection using Infrared/Visible light sensitive phototransistors and a simple LM339
voltage comparator circuit. [from Rob Paisley's Model Train web site] |
|
Infrared Light Photo-Detector Circuit - In this circuit the light falling on
the phototransistor will be from an Infrared Light Emitting Diode (IrLED) but
otherwise it is the same as the phototransistor circuit shown above. When the
light falling on the phototransistor (Q1) is blocked, its conductance will decrease
and the voltage across Q1 will rise....scroll to find this circuit....[from Rob
Paisley's Model Train web site] |
|
Infrared Receiver Module Schematics - Some Information On Using Ir Receiver
Modules…. [from Rob Paisley's Model Train web site] |
| Infrared Transmitter for Locomotives -
(electronic circuit added 4/05) |
|
Interlocked 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] |
|
IR 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] |
|
IR Receiver Modules for 37 to 58KHz - Some Information On Using Ir Receiver
Modules…. [from Rob Paisley's Model Train web site] |
|
Joy Stick Controlled Throttle information - This page presents a new version
of the 'Modernized "Toy" Throttle' circuit that is shown on the 'Various Transistor
Throttles' page at this site. This version was specifically design to be used by
a handicapped person and is controlled by a single axis joy stick that operates
microswitches at each end of its arc of travel. [from Rob Paisley's Model Train web
site] |
|
Knightrider lights for model cars - This simple circuit drives 6 LEDs in 'Knightrider
scanner mode'. Power consumption depends mainly on the type of LEDs used if you use a
7555 (555 CMOS version). (electronic circuit added 11/06) |
|
|
