Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 45,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.
We make every effort to link to original material posted by the designer. 
Please let us if you would like us to link to or post your design.

HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches


Model Airplane Hobby Circuits
#'s - G      HK     LO     M - P      QZ

Last Updated on: Wednesday, December 20, 2017 05:05 AM


Circuits Designed by Dave Johnson, P.E. :
  • 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. 

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

High Speed NiCd Charger for Electric R/C -  A few years back, I published a design for a Low Cost Thermal Peak Detection Charger. Since then, I've designed several other chargers, in my ongoing quest to avoid having to spend money. Of course, in building all these designs, I've probably spent more than a really good commercial charger would have cost me. But designing and building is half the fun....[Stefan Vorketter]
High-Rate Electronic Speed Control with BEC and Brake -  This electronic speed control (ESC) for brushed motors combines the features of two of my earlier designs. One was a high-rate 30A ESC with a brake, and the other a high-rate 12A ESC with a BEC (receiver battery eliminator circuit)… [Stefan Vorketter]
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. Many designs suitable for home construction are fairly large (some as large as 2" square)…. [Stefan Vorketter]
Hot Wire Foam Cutter #1 -  Foam cutting is a relatively simple process once you have the required tools and an acquired level of experience. So once you are set up, don't be....(added 2/06)
Hot Wire Foam Cutter #2 -  After seeing other modelers building their model wings from plastic foam, I decided that I wanted to do the same. Building your wings from foam covered with 1/16 in. balsa can produce a strong and light wing that could be difficult to duplicate with the standard balsa rib construction, specially if the wing had a duel tapered,....(added 2/06)
Hot Wire Foam Cutter #3 -  Here is a homebuilt foam turning lathe!!This is made from a window motor adapted and appropriately painted for the application. The pillow blocks that the rotating shaft bear in were made from foam patterns and cast using the above mentioned techniques. The two dials on the electrical box are light dimmers with simple....(added 2/06)

Hot Wire Foam Cutter #5 -  Hot wire foam cutters are a must when working with polystyrene foam because they make neat, straight and smooth cuts that simply cannot be duplicated with any other type of saw. Most cutters are hand-held devices looking much like a cheese cutter without the roller and operate a bit like a jig saw. The foam cutter described....(added 2/06)
Hot Wire Foam Cutter #6 -  Hot wire foam cutters are used by hobbyists of all stripes to contour Styrofoam into a vast array of shapes for a wide variety of uses. Model railroad builders shape foam into landscapes. RC plane builders shape foam into aircraft wings and fuselages. Stagehands shape foam for theatrical sets and....(added 2/06)
Hot Wire Foam Cutter #7 -  The power supply I used is a little more involved than what is required but it works well and I had the pieces. I used a PWM (Pulse Width Modulator) to control the heat to the wire.  This is a simple electronic control that essentially turns the power to the wire on and off very fast and you can control....(added 2/06)
Hot Wire Foam Cutter #8 -  I am starting a new project that requires almost all foam work. [Tony van Roon's circuit]
Hot Wire Foam Cutter (Al Schoepp) -  (electronic schematic / circuit added 08/09)
Hot Wire Foam Cutter (Charles Wenzel) -  (schematic / circuit added 08/09)
Hot Wire Foam Cutter (Daniel Hartman) -  (electronic schematic / circuit added 08/09)
Hot Wire Foam Cutter (JoeBoy) -  (schematic / circuit added 08/09)
Hot Wire Foam Cutter (Rocket Team Vatsaas) -  (circuit / schematic design added 08/09)
Hot Wire Foam Cutter (Steven Mohr) -  (electronic schematic / circuit added 08/09)
Hot Wire Foam Cutter (The Hermit MachineShop) -  (schematic / circuit added 08/09)
Hot Wire Foam Cutter (Tom Weedom) -  (circuit / schematic design added 08/09)
HotChek-Brent's website -  (electronic schematic / circuit added 08/09)
Hot-Wire Foam Cutter -  Transformer T1 rectifies the 18 to 22 Volts AC via the bridge rectifier (BR1) to about 26 or 32 Volts DC. T1 is a regular type without "CT" or center-tap. If your transformer is above 22VAC, you need to modify the circuit to protect the LM350K from over-voltage (33V max). Check the datasheet for more info.…. [written by Tony van Roon]
Model Airplane Circuits:  #'s - G      HK     LO     M - P      QZ


HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches


 About Us   |  Advertise on DiscoverCircuits.com   |   Report Broken Links  |    Link to DiscoverCircuits.com  |    Privacy Policy


Copyright  January, 1998 - December, 2017     David A. Johnson & Associates.  All Rights reserved. 


 Linking is ALLOWED but COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED.