Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 40,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.
We make every effort to link to original material posted by the designer. 
Please let us if you would like us to link to or post your design.

HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches

Charge Pump Circuits   Page 1
Charge Pumps:    #-C      D-N      O-Z

Last Updated on: Thursday, April 07, 2016 01:01 PM

Circuits Designed by Dave Johnson, P.E. :
  • +5v Powered Charge Pump Battery Charger -  The circuit below will trickle charge a four cell pack of AA or AAA NiMH batteries. The circuit draws current from the +5v available a USB connection and pumps about 70ma of current into the battery. This should be enough current to fully charge a pack of . . . [Circuit by David Johnson P.E.,  02/07/10]

  • 1 Watt Fluorescent Lamp Night Light -  If you are tired of replacing small night light lamps, try this circuit. The line powered circuit uses a long life cold cathode fluorescent lamp. A simple charge pump technique runs the lamp without any transformer . . . [Circuit by David A. Johnson P.E.,  03/26/99]


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

+5v Powered Charge Pump Battery Charger -  The circuit below will trickle charge a four cell pack of AA or AAA NiMH batteries. The circuit draws current from the +5v available a USB connection and pumps about 70ma of current into the battery. This should be enough current to fully charge a pack of . . . [Circuit by David Johnson P.E.,  02/07/10]

 

C controls charge pump as background task -  08/01/97  EDN Design Idea   Because of power consumption and cost, designers of battery-powered devices mainly choose components that run at 3V or lower. Unfortunately, many devices operate only at 5V, including LCDs with built-in drivers, programming lines of. . .  [by Carlos Cossio, Santander, Spain]

 

1 Watt Fluorescent Lamp Night Light -  If you are tired of replacing small night light lamps, try this circuit. The line powered circuit uses a long life cold cathode fluorescent lamp. A simple charge pump technique runs the lamp without any transformer . . . [Circuit by David A. Johnson P.E.,  03/26/99]

 

10 Khz VFC uses Charge Pump Variation -  04/09/98 EDN Design Idea   (Several circuits included, scroll to find this one)A diode-capacitor charge pump is the starting point for many voltage-to-frequency-converter (VFC] designs. The circuit in Figure 1 uses a variation on that classic theme to ach. . .  [by Stephen Woodward, University of North Carolina, Chapel Hill, NC]

 

100ma UltraLow Noise Charge Pump LED Supply with Output Current Adjust -   LTC3201. . .  [Linear Technology]

 

125Khz LC Oscillator -  This circuit adds more invertors in parallel to deliver more power. It is similar to CMOS INVERTERS FORM 125KHZ OSCILLATOR. Please note that the values shown are for 125KHz.  . . . [Circuit by Dave Johnson P.E.,  03/12/02]

 

125KHZ Medium Power Ocsillator -  This circuit is similar to MEDIUM POWER 125KHZ OSCILLATOR but adds even more inverters in parallel to deliver yet more power. The values shown are for 125KHz . . . [Hobby Circuit designed by David Johnson P.E.,  03/12/02]

 

125Khz Oscillator from CMOS Inverters -  This circuit inverts the LC components so the inductor is grounded. Two inverters are needed to produce the needed oscillation. Again, the values shown set the frequency at 125KHz but can be changed to produce other frequencies . . . [Circuit by David Johnson P.E.,  03/12/02]

 

125khz Oscillator with Medium Power -  This circuit adds even more inverters in parallel to deliver yet more power. The values shown are for 125KHz . . . [Hobby Circuit designed by David A. Johnson P.E.,  03/12/02]

 

125Khz Ultra Pure Sine Wave Signal Source -  For some RFID systems operating at 125KHz, a very low distortion signal source reference is needed. The circuit shown on this page produces a 10-volt peak-to-peak signal into a 50-ohm load, with a distortion of only 0. 01% . . . [Hobby Circuit designed by Dave Johnson P.E.,  02/11/02]

 

12v Touch Switch Exciter Circuit -  This circuit is designed to generate a 20KHz pseudo sine wave signal that can power about 50 remote touch activated switch circuits.   It can support a cable length of about 2500 feet.   A typical remote switch circuit is also shown as well as a receiver circuit for those switches.  . . . [Circuit by Dave Johnson P.E.,  02/10/02]

 

200Mhz-400Mhz Voltage Controlled Oscillator (VCO) -  If you need a clean emitter coupled logic (ECL) type signal between 200MHz and 400MHz this circuit works fine. It uses four voltage-controlled capacitors to change the frequency . . . [Circuit by Dave Johnson P.E.,  03/19/99]

 

24v NiMH Battery Charger Using a 12v Solar Panel  -  A while back I received an email from a guy in the UK. He wanted to use a small solar panel, designed to charge 12v lead acid batteries, but use it to charge a 24v battery pack. His 24v battery pack used 20 AA size NiMH cells. He went on to explain that his 20 cell NiMH battery pack was used very infrequently . . . [Hobby Circuit designed by Dave Johnson P.E.,  10/12/11]

 

28V Dual Tracking Bipolar Supply with Outputs from 5V to 25V -  The LTC3260 is a low noise dual polarity output power supply that includes an inverting charge pump with both positive and negative LDO regulators. The charge pump operates over a wide 4. 5V to 32V input range and can deliver up to 100mA of output current. Each LDO regulator can provide up to 50mA of output current. The negative . . .  [Linear Technology App Note - , Apr 19th 2012]

 

28V Dual Tracking Bipolar Supply with Outputs from 5V to 25V -  The LTC3260 is a low noise dual polarity output power supply that includes an inverting charge pump with both positive and negative LDO regulators. The charge pump operates over a wide 4. 5V to 32V input range and can deliver up to 100mA of output current. Each LDO regulator can provide up to 50mA of output current. The negative LDO post regulator is powered from the charge pump output. The LDO output voltages can be adjusted using external resistor dividers. . .  [Linear Technology App Note - , Apr 19th 2012]

 

300v Peak to Peak Signal Generator -  This circuit converts a square wave signal to a +-150 volt output signal with fast 100nS rise and fall times . . . [Circuit by David A. Johnson P.E.,  06/03/00]

 

50/60Hz Sync Generator-Fully Isolated -  This circuit will produce a single pulse at the zero voltage cross points of the power line voltage. An opto-coupler provides a very safe 5KV isolation . . . [Circuit by Dave Johnson P.E.,  12/12/04]

 

5V power supply teams low-dropout regulator, charge pump -  01/08/04  EDN Design Idea   Auxiliary power of 3. 3V is replacing the 5V auxiliary power that "silver boxes" supply in most computer systems, but some circuits still require a 5V supply. Such systems impose the messy task of creating a central 5V auxiliary supp. . .  [by Jim Christensen, Maxim Integrated Products, Sunnyvale, CA]

 

60hz Clock Generator is Line Powered -  This circuit is connected to the 120vac power line and transfers 60Hz clock pulses to a logic circuit. The optoisolator used provides 5000 volts of isolation between the power line and the logic side of the circuit . . . [Hobby Circuit designed by David A. Johnson P.E.,  02/23/99]

 

      PAGE   Next >>>>


[Google-ADS/i-ad-728x15-Links.htm]

Charge Pumps:   #-C      D-N      O-Z
 


HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches


 About Us   |  Advertise on DiscoverCircuits.com   |   Report Broken Links  |    Link to DiscoverCircuits.com  |    Privacy Policy

Copyright  2002 - 2015 David A. Johnson & Associates.  All Rights reserved. 
 Linking is ALLOWED but COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED.