People and youtube channels I like :: SJR Looper Axiom RF

Posted: Jul 11, 2025 2:43:34 pm

cgetty
Posts: 107 Registered: 2013-12-25	The SJR Looper is a type of experimental pulse circuit, most notably developed and demonstrated by the YouTube creator "LaserSaber." It is not a traditional pulse motor in the sense of spinning a rotor, but rather an energy-efficient, self-looping electronic oscillator designed to drive LEDs or similar loads with extremely low power consumption. stands for Super Joule Ringer, a circuit originally designed to extract maximum energy from a power source (like a battery or capacitor) to light LEDs efficiently. The Looper variant incorporates a feedback loop: after an initial charge (often from a hand-crank generator or a brief battery connection), the circuit feeds its own output back into its input, maintaining oscillation and light output for an extended period—even after the battery is removed It typically uses a capacitor as its main energy storage, not a battery, and can run a bright LED for a surprisingly long time from a very small initial energy input The circuit is based on a "ringer" or "resonant" topology, where each pulse causes a ringing effect that boosts the voltage, making it possible to light LEDs efficiently from low voltage sources LaserSaber has published numerous videos showing the SJR Looper powering LEDs after being charged for just a few seconds, emphasizing its efficiency and the extended run time from a small capacitor The device is often shown as a battery-free lamp or "pull start lamp," highlighting its ability to run without continuous battery power The SJR Looper is popular among DIY and alternative energy enthusiasts for its simplicity, efficiency, and educational value.
Last edited by: cgetty on Jul 11, 2025 3:42:58 pm Profile

Posts: 107
Registered:
2013-12-25

The SJR Looper is a type of experimental pulse circuit, most notably developed and demonstrated by the YouTube creator "LaserSaber." It is not a traditional pulse motor in the sense of spinning a rotor, but rather an energy-efficient, self-looping electronic oscillator designed to drive LEDs or similar loads with extremely low power consumption.

stands for Super Joule Ringer, a circuit originally designed to extract maximum energy from a power source (like a battery or capacitor) to light LEDs efficiently.

The Looper variant incorporates a feedback loop: after an initial charge (often from a hand-crank generator or a brief battery connection), the circuit feeds its own output back into its input, maintaining oscillation and light output for an extended period—even after the battery is removed

It typically uses a capacitor as its main energy storage, not a battery, and can run a bright LED for a surprisingly long time from a very small initial energy input

The circuit is based on a "ringer" or "resonant" topology, where each pulse causes a ringing effect that boosts the voltage, making it possible to light LEDs efficiently from low voltage sources

LaserSaber has published numerous videos showing the SJR Looper powering LEDs after being charged for just a few seconds, emphasizing its efficiency and the extended run time from a small capacitor

The device is often shown as a battery-free lamp or "pull start lamp," highlighting its ability to run without continuous battery power

The SJR Looper is popular among DIY and alternative energy enthusiasts for its simplicity, efficiency, and educational value.

Last edited by: cgetty on Jul 11, 2025 3:42:58 pm

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