Base Current Compensated High Voltage Amplifier:  Unpublished 1995 The base current of a single transistor high voltage amplifier varies from unit to unit and over temperature and current. To compensate, this opamp circuit measures  base current and adds an equal but opposite current to  input. (added 9/04)

Envelope Follower Combines Fast Response Low Ripple:  12/26/02 EDN Design Ideas  /  (added 1/05)  Envelope followers extract amplitude information from complex audio waveforms. The resulting dc voltage often drives nonlinear stages, such as voltage-controlled amplifiers or filters. You must make a careful trade-off between the speed of response to a rapidly changing input signal and the amount of ripple in the dc output that you can tolerate....

Follow the Debouncing Flip-Flops:  02/17/00 EDN-Design Ideas / (added 2/06)  

Get Fast Stable Response from Improved Unity-Gain Followers:  National Semiconductor Application Note   (app note added 6/06)

High Input Impedance Source Follower:  Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc.  (app note added 6/06)

LB-11: The LM110: An Improved IC Voltage Follower:  National Semiconductor Application Note   (app note added 2/06)

LB-42: Linear Brief 42 Get Fast Stable Response from Improved Unity-Gain Followers:  National Semiconductor Application Note   (app note added 2/06)

Level Shifter Follows Negative Output:  11/23/94 EDN-Design Ideas / (added 6/06) Transistors Q1 and Q2 in Fig 1, develop a feedback signal of the proper positive polarity for regulator IC1 from the circuit's negative output. You can use this simple technique to sense any negative-voltage output. The regulator drives a charge pump comprising L1(Sumida, Arlington Heights, IL, (708) 956-0666), C1, C2, D1, and D2. When the regulator's switch is on, current builds in inductor L1. At the same time, the charge on C1 transfers to the output capacitor, C2. During the switch's off time, energy stored in the inductor charges capacitor C1....  

LM110-An Improved IC Voltage Follower:  National Semiconductor Application Note   (app note added 2/06)

Micropower Buffered Rail-to-Rail Adjustable Volatge Source:  Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc.  (app note added 6/06)

Micropower Buffered Variable Voltage Source:  Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc.  (app note added 6/06)

Rail-to-Rail Voltage Follower/Buffer:  Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc.  (app note added 6/06)

The LM110-An Improved IC Voltage Follower:  National Semiconductor Application Note   (app note added 2/06)