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Hobby Circuits designed by Dave Johnson

Last Updated on: Tuesday, June 01, 2021 03:22 PM


Text & Graphics Copyright David A. Johnson, PE  --  ALL Rights Reserved.
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Charge Pump Circuits
Circuits designed by David Johnson, P.E. :

CMOS Inverters Form 125Khz Oscillator

Digital noise generator

Exciter Circuit-12v Touch Switch

FETs & Logic Devices Divides Supply Voltage on Charge Pump Efficiently 

Flexible Outputs from Square Wave Driver

Fluorescent Lamp Night Light Needs Only 1 Watt

Fully Isolated 50/60hz Sync Generator

Gated 125Khz Oscillator

Gated Crystal Oscillator with Very Low Power

LC Oscillator Medium Power 125Khz

Over-Temperature Micro-Power Alarm

Peak to Peak 300v Signal Generator

Touch Switch Exciter

125KHZ Medium Power Oscillator

125khz Oscillator with Medium Power

125Khz Ultra Pure Sine Wave Signal Source

24v NiMH Battery Charger using a 12v Solar Panel 

Astable Multivibrator with Very Low Power

Charge Pump Battery Charger-+5 Volts

CMOS Inverter forms a Resonant LD Oscillator 


 

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