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Here is a simple PWM generator; RMCybernetics - DIY Homemade Power Pulse Controller[/url]
Substitute your mosfet for the one in the schematic.
This is a very poor excuse for a high-frequency PWM MOSFET controller. The gate drive is much too whimpy to minimize dissipation in the FET (gate current sourced by 2.2K resistor, sunk by a very slow opamp) . Witness the large heat sink that the FET is mounted on. Very naive design.
This is a very poor excuse for a high-frequency PWM MOSFET controller. The gate drive is much too whimpy to minimize dissipation in the FET (gate current sourced by 2.2K resistor, sunk by a very slow opamp) . Witness the large heat sink that the FET is mounted on. Very naive design.