I've just received mine. What a bummer that it does not memorize the red mode. The whole point of a red mode is to preserve night vision but then you must go through white mode first.
This makes a nice map reading light for at night! 🙂 Weerapat, if you happen to have the 18650 extension tube for the Wurkkos TS11 could you try to see if it fits the SR20 Mini? Oh, btw.. wishing you a Happy New Year 2025! 🍿🎉🎆🎇🎊🍻🔦🔆🙏
Hello sir. Please read this. Thank you very much for your support sir 😊. Please subscribe 🙏. The FET driver, buck driver, and boost driver are different types of flashlight drivers, each with unique characteristics suited to specific applications. Here's an overview of their differences: --- 1. FET Driver (Field-Effect Transistor Driver) How it works: Uses a Field-Effect Transistor to directly connect the battery to the LED with minimal regulation. Essentially acts as a switch, allowing current to flow directly to the LED. Key Features: High Output: Allows for maximum brightness since it delivers almost all the current the battery can supply. Efficiency: Highly efficient at high output levels but lacks current regulation. No Voltage Boosting/Stepping Down: Works best when the battery voltage matches the LED requirements. Advantages: Simple and efficient for high-power applications. Allows the LED to reach its full potential brightness. Disadvantages: No control over current once the battery voltage starts to drop. Can overdrive LEDs, shortening their lifespan if not designed carefully. Use Case: High-performance flashlights where maximum brightness is prioritized. --- 2. Buck Driver How it works: A switching regulator that steps down the voltage while maintaining or increasing current to the LED. Key Features: Voltage Regulation: Reduces higher battery voltage to match the LED’s requirements. Current Regulation: Delivers consistent current to the LED, preserving efficiency and protecting the LED. Advantages: Efficient when the input voltage is higher than the LED's requirements. Maintains brightness consistency even as the battery voltage drops (within its working range). Disadvantages: Requires more complex circuitry, leading to slightly higher cost and size. Inefficient if the battery voltage is already close to the LED voltage. Use Case: Mid-to-high-performance flashlights requiring steady output and long runtimes. --- 3. Boost Driver How it works: A switching regulator that increases (boosts) the voltage to match the LED requirements. Key Features: Voltage Boosting: Steps up lower battery voltage to meet the higher forward voltage of LEDs. Current Regulation: Controls the current supplied to the LED. Advantages: Allows the use of lower-voltage batteries to power higher-voltage LEDs. Maintains brightness as the battery drains below the LED’s operating voltage. Disadvantages: Less efficient than buck drivers due to the energy cost of boosting voltage. Generates more heat due to increased power conversion. Use Case: Flashlights using single-cell batteries with high-voltage LEDs. --- Summary Table: Choosing the right driver depends on your flashlight's power source, LED requirements, and desired performance characteristics.
Weerapat, congratulations on breaking the 13,000 subscriber limit! Your channel is top notch!
Hello sir. Thank you very much for your support sir 😊🙏.
I've just received mine. What a bummer that it does not memorize the red mode. The whole point of a red mode is to preserve night vision but then you must go through white mode first.
Hello sir. Agree sir. It should have memory function of every mode. Thank you very much for your support sir 😊. Please subscribe 🙏.
This makes a nice map reading light for at night! 🙂 Weerapat, if you happen to have the 18650 extension tube for the Wurkkos TS11 could you try to see if it fits the SR20 Mini?
Oh, btw.. wishing you a Happy New Year 2025! 🍿🎉🎆🎇🎊🍻🔦🔆🙏
Hello sir. Some say hs40 tube can fit in sir. Thank you very much for your support sir 😊🙏. Happy new year sir 🥳.
Nice! Is FET driver regulated like buck driver? or does it get dimmer as the battery drains? quite important for 18350, I think...
Hello sir. Fet, its brightness will get dim as the batt drain sir. Thanks for watching and your support sir 😊. Please subscribe 🙏.
Thank you Sir
Thanks for watching and your support sir 😊. Please subscribe 🙏.
whats the different between the driver? like buck boost etc?
Hello sir. Please read this. Thank you very much for your support sir 😊. Please subscribe 🙏.
The FET driver, buck driver, and boost driver are different types of flashlight drivers, each with unique characteristics suited to specific applications. Here's an overview of their differences:
---
1. FET Driver (Field-Effect Transistor Driver)
How it works:
Uses a Field-Effect Transistor to directly connect the battery to the LED with minimal regulation.
Essentially acts as a switch, allowing current to flow directly to the LED.
Key Features:
High Output: Allows for maximum brightness since it delivers almost all the current the battery can supply.
Efficiency: Highly efficient at high output levels but lacks current regulation.
No Voltage Boosting/Stepping Down: Works best when the battery voltage matches the LED requirements.
Advantages:
Simple and efficient for high-power applications.
Allows the LED to reach its full potential brightness.
Disadvantages:
No control over current once the battery voltage starts to drop.
Can overdrive LEDs, shortening their lifespan if not designed carefully.
Use Case: High-performance flashlights where maximum brightness is prioritized.
---
2. Buck Driver
How it works:
A switching regulator that steps down the voltage while maintaining or increasing current to the LED.
Key Features:
Voltage Regulation: Reduces higher battery voltage to match the LED’s requirements.
Current Regulation: Delivers consistent current to the LED, preserving efficiency and protecting the LED.
Advantages:
Efficient when the input voltage is higher than the LED's requirements.
Maintains brightness consistency even as the battery voltage drops (within its working range).
Disadvantages:
Requires more complex circuitry, leading to slightly higher cost and size.
Inefficient if the battery voltage is already close to the LED voltage.
Use Case: Mid-to-high-performance flashlights requiring steady output and long runtimes.
---
3. Boost Driver
How it works:
A switching regulator that increases (boosts) the voltage to match the LED requirements.
Key Features:
Voltage Boosting: Steps up lower battery voltage to meet the higher forward voltage of LEDs.
Current Regulation: Controls the current supplied to the LED.
Advantages:
Allows the use of lower-voltage batteries to power higher-voltage LEDs.
Maintains brightness as the battery drains below the LED’s operating voltage.
Disadvantages:
Less efficient than buck drivers due to the energy cost of boosting voltage.
Generates more heat due to increased power conversion.
Use Case: Flashlights using single-cell batteries with high-voltage LEDs.
---
Summary Table:
Choosing the right driver depends on your flashlight's power source, LED requirements, and desired performance characteristics.
@Weerapat and what is your opinion about SR20 mini vs Skilhunt Mix 7 Gen 2? Is the Skilhunt superior but more expensive?
Hello sir. To be honest, Skilhunt is better sir. It has many more options to use. Thanks for watching and your support sir 😊. Please subscribe 🙏.
The SR40a headlamp tube will convert this into a 18650.
@Next96300 That one works too? Nice, now if they just made the SR20 in 5000k.
Hello sir. Wow. Thanks for the info sir. Please subscribe 😊🙏.
👍💯
Thanks for watching and your support sir 😊🙏.