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|
A glow plug made by OS, type of A-3 shows various glowing conditions while turning the trimmer. I used 5VDC power supply.
Vs ( power ) : input +3 to +15 VDC
COM ( GND ) : common or ground
SIG ( signal ) : external control input ( 外部制御入力 )
Load ( 負荷 )
|Size||45 x 76mm|
(1.77 x 2.99")
( 穴径 )
( 穴ピッチ )
|39 x 70mm|
(1.54 x 2.76")
Registered at JPO, No.3132951
+ : positive
- : negative
Switch function ( スイッチ機能 )
Circuit power on/off
LED current on/off for saving
Toggle : Load on/off
Jumper : Alternate external or internal control input
Dry contact ( 接点入力 )
Voltage input ( 電圧入力 )
Input high level ( 入力電圧 ): 3 to 16 VDC
Input signal current ( 入力信号電流 ): negligible uA
Current consumption ( 消費電流 ): 1 mA at 4.5V
PWM frequeny : 15 kHz
Trimmer Adjust equivalent constant current ( 電流調整 )
Weight 30g ( 1.1oz )
|There are 4 principal applications how to use the driver.|
- Fig.1 shows DC motor on/off control. PS is Power Supply.
- Fig.2 shows how to enlarge lower limit of engine rotation speed by glowing.
- Fig.3 shows an example for UAV or something. It is able to improve fuel comsumption by synchronized ignition signal in very lean condition.
- Fig.4 shows an example of a scale aircraft to have an internal starter to crank in remote operation.
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.
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