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Amplifiers: Buffer Circuits
Amplifier -- Main Page

Buffer Amplifier Circuits:  Page 1,   Page 2,    Page 3Page 4
 

Last Updated: May 18, 2015 03:59 AM

 
Circuits Designed by Dave Johnson, P.E. :

Buffer Amplifier Circuits

Dave's Amplifier Circuits:      Audio       Buffers         High Frequency-High Speed-Wide Band       
High Impedance Circuits      Low Noise      RF (Radio Frequency)       
Transimpedance             Variable Gain      Current  to Voltage Converter

 

  • 175Khz Inductive Pulse Receiver  -  This circuit is discussed in more detail in the Experimenters Journal. The receiver’s six inch diameter coil detects the ring signal from the above transmitter and use a single NPN transistor to provided enough amplification for the signal to be easily viewed on an oscilloscope . . . [Circuit by David A. Johnson P.E.,  06/29/00]

  • 175Khz Inductive Pulse Transmitter  -  This circuit is discussed in more detail in the Experimenters Journal. The transmitter’s six-inch diameter coil launches powerful magnetic 175KHz ring pulses that can be detected by the circuit below . . . [Hobby Circuit designed by David A. Johnson P.E.,  06/27/00]

  • 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 Johnson P.E.,  06/03/00]

  • AC Current Indicator Light  -  This circuit could be wired into a 120vac power line, which feeds power to any load, ranging from 40 watts to 250 watts.  It will turn on a LED light whenever current is being drawn by a load.  It is especially useful for remote lights, where you may not . . . [Hobby Circuit designed by Dave Johnson P.E.,  10/16/05]

  • Advertising Badge #1 with Flashing LED  -  I have seen numerous flashing light badges at trade shows and conventions. They are often handed out as gifts to promote some business. The devices often use inefficient circuits, which cause the battery power source to be quickly depleted . . . [Circuit by David Johnson P.E.,  03/26/02]

  • Advertising Badge #2 with Flashing LED  -  This circuit uses a CD4013 dual D Flip/Flop IC.  A single lithium battery will provide months of continuous LED flashing.  It also has a tiny push-button switch to turn on and off the light flashing . . . [Circuit by David A. Johnson P.E.,  03/26/02]

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

175Khz Inductive Pulse Receiver -  This circuit is discussed in more detail in the Experimenters Journal. The receiver’s six inch diameter coil detects the ring signal from the above transmitter and use a single NPN transistor to provided enough amplification for the signal to be easily viewed on an oscilloscope . . . [Circuit by David A. Johnson P.E.,  06/29/00]

 

175Khz Inductive Pulse Transmitter -  This circuit is discussed in more detail in the Experimenters Journal. The transmitter’s six-inch diameter coil launches powerful magnetic 175KHz ring pulses that can be detected by the circuit below . . . [Hobby Circuit designed by David A. Johnson P.E.,  06/27/00]

 

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 Johnson P.E.,  06/03/00]

 

50 Mhz, 250W Amplifier Using Push-Pull Arf448a/B -  Application Note Microsemi-formerly Advanced Power Technology APT9702A …

 

750 MHz Power Doubler & Push-Pull CATV Hybird Modules Using Gallium Arsenide 3/21/96  -  Application Note California Eastern Laboratories Doc #920  …

 

A 50 Mhz, 250W Amplifier Using Push-Pull Arf448a/B -  Application Note formerly Advanved Power Technology APT9702A…

 

A Push-Pull 300-watt Amplifier for 81.36 MHz -  This article describes a 300 watt amplifier for 81.36 MHz using a push-pull pair of plastic packaged devices. The design techniques and construction practices are described in enough detail to permit duplication of the amplifier. Application Note Microsemi-formerly Advanced Power Technology APT9801…

 

AC Current Indicator Light -  This circuit could be wired into a 120vac power line, which feeds power to any load, ranging from 40 watts to 250 watts.  It will turn on a LED light whenever current is being drawn by a load.  It is especially useful for remote lights, where you may not . . . [Hobby Circuit designed by Dave Johnson P.E.,  10/16/05]

 

Advertising Badge #1 with Flashing LED -  I have seen numerous flashing light badges at trade shows and conventions. They are often handed out as gifts to promote some business. The devices often use inefficient circuits, which cause the battery power source to be quickly depleted . . . [Circuit by David Johnson P.E.,  03/26/02]

 

Advertising Badge #2 with Flashing LED -  This circuit uses a CD4013 dual D Flip/Flop IC.  A single lithium battery will provide months of continuous LED flashing.  It also has a tiny push-button switch to turn on and off the light flashing . . . [Circuit by David A. Johnson P.E.,  03/26/02]

 

AN-1111: an Introduction to IBIS -  National Semiconductor Application Note  I/O Buffer Information Specification Modeling  …

 

AN-1202:AN-1202 Usbn9603/4: Increased Data Transfer Rate using Ping-Pong Buffering -  National Semiconductor Application Note  …

 

AN-329: Implementing an 8-Bit Buffer in COPS -  National Semiconductor Application Note  …

 

AN-581: Biasing & Decoupling Op Amps in Single Supply Applications -  AN-581 Analog Devices App Note  …

 

AN-692: Universal Precision Op Amp Evaluation Board -  AN-692 Analog Devices App Note  …

 

AN-772: A Design & Manufacturing Guide for the Lead Frame Chip Scale Package -  AN-772 Analog Devices App Note  …

 

Applications of Wide-Band Buffer Amplifiers -  National Semiconductor Application Note  …

 


Buffer Amplifier Circuits:  Page 1,   Page 2,    Page 3Page 4

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