Glowing experiment by PWM driver
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I made PWB (Print Wired Board) of PWM driver and chassis for it by my design. I did art work of the PWB and drawing of the chassis.

 Glowing experiment
Glow140 Glow122.jpg Glow114 Glow108-1.JPG
A glow plug made by OS, type of A-3 shows various glowing conditions while turning the trimmer. I used 5VDC power supply.

Size45 x 76mm
(1.77 x 2.99")
Hole diameter3.2mm (0.13")
Hole pitch39 x 70mm
(1.54 x 2.76")
Registered at JPO, No.3132951
  • Vs ( power ) : input +3 to +15 VDC  
  • COM ( GND ) : common or ground  
  • SIG ( signal ) : external control input  
  • Load
      + : positive
      - : negative
    Switch function
  • DIP
      Circuit power on/off
      LED current on/off for saving
  • Toggle : Load on/off
  • Jumper : Alternate external or internal control input
      Dry contact
      Voltage input
  • Input high level : 3 to 16 VDC
  • Input signal current : negligible uA
  • Current consumption : 1 mA at 4.5V
  • PWM frequeny : 15 kHz
    Trimmer  Adjust equivalent constant current
    Weight  30g ( 1.1oz )

  •  Application
    There are 4 principal applications how to use the driver.
    1. Fig.1 shows DC motor on/off control. PS is Power Supply.
    2. Fig.2 shows how to enlarge lower limit of engine rotation speed by glowing.
    3. Fig.3 shows an example for UAV or something. It is able to improve fuel comsumption by synchronized ignition signal in very lean condition.
    4. Fig.4 shows an example of a scale aircraft to have an internal starter to crank in remote operation.


    Chassis example

    The PWM driver board attaches a shassis of a Aluminum sheet of 0.8mm thick. The shassis hastwo female M3 threads for binding. It weighs 15g ( 0.53oz ) including a rubber bush, also weighs screws 5g ( 0.18oz ) and so on.

    I would like to distribute it across the Pacific Ocean. Please inform me, if you are interested. Thank you.

    The following includes Japanese characters.

    Biwa Lake JAPAN   aboutMe
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