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Model Airplane Hobby
Circuits,
#'s - G
HK
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PZ
Last Updated on:
Wednesday, December 20, 2017 05:05 AM |
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| Circuits Designed
by Dave Johnson, P.E. : |
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Model Airplane Wing Tip Flasher - The circuit below is designed to flash two white LEDs mounted at the wing tips of a model
airplane. The flasher unit is powered by a 4.5v supply made of three AA or AAA 1.5v alkaline battery cells. The average
current is about 2ma so a set of batteries[ . . . Hobby Circuit designed by David Johnson P.E., 10/18/09]
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Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
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LED Bargraph Optical Tachometer - For the electric R/C enthusiast,
a tachometer can be a very useful piece of equipment. When I first built
this tach back in 1995, it was essential, as there were very few
off-the-shelf electric R/C power systems that just worked….. [Stefan
Vorketter] |
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Low Cost Thermal Peak Detection Charger - The electric model
aircraft and car industries have produced a bewildering array of field
chargers for NiCd motor battery packs. These range from simple 6 or 7
cell....[Stefan Vorketter] |
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Miniature high-rate speed control - A miniature high-rate speed
control published in the newsletter published by Electric Model Flyers' of
Southwestern Ontario (diagram add |
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Miniature High-Rate Speed Control with BEC - My first Speed 400
powered plane was the Sydney's Special, an 80% scaled down version of Vernon
Williams' Fred's Special, as published in the November 1991 issue of Model
Airplane News.....[Designed by Stefan Vorkoettert] |
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Miniature High-Rate Speed Control with Brake - Many designs for
high-rate speed controls have been published. Most require two 8-pin
integrated circuits (ICs) or one 14-pin IC....(electronic construction
project added 09/06) |
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Miniature low-rate speed control - A miniature low-rate speed control
published in the newsletter published by Electric Model Flyers' of Southwestern
Ontario (diagram added 11/06) |
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Mini-Contoller - Speedcontrollers for Model-Aircrafts with BEC (electronic
diagram added 11/06) |
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Model Aeroplane Navigation Strobe/Battery Level Indicator - Fair Waring,
site contains annoying popups. If you are interested in model aeroplanes and
have the capital, a radio controlled electric park flyer is a must have. An RC
aeroplane under 400 grams floats around like the rubber models of my youth and contact
with the ground doesn't seems to involve that sickening crunch....(design added 5/05)
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Model Airplane Wing Tip Flasher - The circuit below is designed to flash two
white LEDs mounted at the wing tips of a model airplane. The flasher unit is
powered by a 4.5v supply made of three AA or AAA 1.5v alkaline battery cells.
The average current is about 2ma so a set of batteries should last about 1000 hours of
flashing. The circuit uses one hex Schmitt trigger inverter to perform all the timing
functions. A single n-channel FET drives the two LEDs, each with a peak current of
about 20ma. The circuit flashes the two LEDs in a pattern typical of commercial
airplanes. [Hobby Corner . . . Circuit by Dave Johnson] |
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Model Rocket Launch Controller zen 22142 - Most commercial rocket
controllers available to buy are either expensive or do not have many features. After
a lot of searching I found nothing that met my needs. I wanted a controller that could
work multiple pads, as well as being easy to set up and pack away, so I designed my
own. It has the ability to control up to 8 pads through a 6 core cable. You may(added
11/05) |
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Model Rocket with Video Camera - (electronic circuit added 4/05)
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Multi Launcher for Model Rockets - This launch controller can be used with
low voltage battery igniters, which fire rocket engines in model rockets such as the
Estes range. These circuits are electrical, only switches and contacts are involved.
First the circuit for a single rocket….. [Andy Collison] |
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On/Off Motor Controller with Brake - Modern electronic speed controllers (ESCs)
are very efficient, but they still have some drawbacks. An inexpensive ESC with two
IRFZ40 MOSFETs has an on-resistance of 14 milliOhm. At 20A current, this means a
voltage drop of 0.28V, and a power loss of 5.6W. Furthermore, to build an ESC with a
brake generally requires an expensive P-channel MOSFET....[Stefan Vorketter] |
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One ounce rocket ejection timer - This page describes the how to build a
very small (1.5"x1.5", ~1 oz.) rocket ejection timer. I have tired to give as complete
of instructions as possible, but you still might encounter problems. While it is
possible to build this timer without printing a custom circuit board, I don't recomend
it. In the past I....[contributed by Jonny Dyer] |
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Model
Airplane Circuits:
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