3 Pins On-On-Off Self-Lock Tactile Switch
(This switch is used in LED FLASH TORCH LIGHT)
Normally Flash lights comes in two to three working Mode this switch is used for two working mode.
1) Long-distance with small angle focus area.
2) Short-distance with wide angle focus area.
(Coverage angle & distance of light focus is depending on Lenses & glass used in the torch).
Opened the switch to check working mechanism I found the arrangement inside as follows.
In my last article I shared wiring diagram about “Article on Rechargeable LED Head Torch Repair”.
https://jestineyong.com/rechargeable-led-head-torch-repair/
On switch manufacturer put one 10Ω Resistor to bifurcate two working mode.
IN CLICK 1 – Current is directly applied to the LED hence LED will draw full current as per rating of the LED & it light up with its full intensity by giving long distance light on small angle focus.
IN CLICK 2 – Current is passing through 10 Ohm Resistor so that LED can draw current as per current limiting by the resistor by giving short distance light on wide angle focus.
IN CLICK 3 – No contacts between any terminal & switch remain OFF.
This article was prepared for you by Yogesh Panchal who works as a Computer Hardware Engineer in Mumbai India.
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Note: You can check his previous repair articles on Bluetooth Earbud Boult Audio X50
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Albert van Bemmelen
May 10, 2025 at 4:01 pm
Thanks for the clear explanation Yogesh. I already thought it had to be a changeover switch in your previous article but never had seen this 3 option pushbutton switch before!
Good to know they exist!
Waleed Rishmawi
May 10, 2025 at 10:45 pm
I have plenty of these switches in my shop by I never bother to open one and check how they work. Thanks for sharing for the explanation. Have a blessed day
Yogesh Panchal
May 11, 2025 at 10:39 pm
Thanks! Waleed,
This type of switch is commonly used in torches for Multi-Functional modes.
Imoudu
May 12, 2025 at 4:28 am
Yogesh,
This type is on touch lights,and it's hard to repair,thanks
Yogesh Panchal
May 12, 2025 at 3:10 pm
Thanks! Imoudu,
Modification is the only solution if parts not available.
Yogesh Panchal
May 10, 2025 at 11:11 pm
Thanks!Albert
Parasuraman S
May 10, 2025 at 11:57 pm
Very useful information sharing, dear Yogesh Bai! Never heard about such switches so far! Many thanks, dear!
Yogesh Panchal
May 11, 2025 at 10:39 pm
Thank you! Sir
Marj J
May 11, 2025 at 3:19 am
Yogesh good article very informative.
Yogesh Panchal
May 11, 2025 at 10:40 pm
Thanks! MarjJ
Humberto
May 11, 2025 at 7:58 pm
Good information, I'd never heard about them. Congratulations
Yogesh Panchal
May 11, 2025 at 10:40 pm
Thanks!Humberto