This simple "Joule Thief" self-oscillating LED circuit will produce light even when the battery voltage drops to 0.4 V.

Mike Donnelly

Joule Thief LED oscilator transformer saturation

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This is a companion example to the design: "TDFS Impedance Stability of Transmission Line Fed LED Driver - Switching".

Mike Donnelly

Buck Converter Constant Power Loads Switching Converter LED transmission line Step-Down TDFS Impedance Stability

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This example demonstrates the use of the TDFS method (Time Domain Frequency Sweep) to measure impedance stability ratio.

Mike Donnelly

Buck Converter Constant Power Loads Switching Converter LED transmission line Step-Down TDFS Impedance Stability

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This LED Dimmer Circuit uses a 555 Timer to control the PWM duty cycle of the current drive.

Mike Donnelly

555 Timer LED potentiometer

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This simple "Joule Thief" self-oscillating LED circuit will produce light even when the battery voltage drops to 0.4 V.

mikeydalby

Joule Thief LED oscilator transformer saturation

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This LED Dimmer Circuit uses a 555 Timer to control the PWM duty cycle of the current drive.

Anonymous

555 Timer LED potentiometer

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This LED Dimmer Circuit uses a 555 Timer to control the PWM duty cycle of the current drive.

Anonymous

555 Timer LED potentiometer

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This LED Dimmer Circuit uses a 555 Timer to control the PWM duty cycle of the current drive.

Anonymous

555 Timer LED potentiometer

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