MAX038 Function Generator:    This is a function generator that can generates 10Hz through 20MHz in six ranges. Analog output can select one of any waveforms, sine, triangle or square. TTL output can select 50% fixed duty or variable pulse width.  (added 10/05)

Modem-Circuit Techniques Simplify Instrumentation Designs:    AN-307) Analog Devices Application Notes  (app note added 2/06) A commutating modem circuit, whether an IC or pc-board, can serve as a building block for many measurement-system functions, reducing noise and ensuring the integrity of transmitted data.

New Instrumentation Amplifiers Maximize Output Swing on Low Voltage Supplies:    DN323  Design Notes (Linear Technology) (app note added 1/06)

Opamp Doubles as Instrumentation Amp:    09/15/94 EDN-Design Ideas / (added 4/02)  The circuit in Fig 1 shows an ordinary, off-the-shelf, general-purpose op amp configured as an instrumentation amplifier. Such a configuration yields an instrumentation amplifier having higher bandwidth than currently available dedicated instrumentation amplifiers have. The circuit in Fig 1 has a gain of 9 with a 3-dB bandwidth of 5 MHz for Ò5V signals. The CMRR is >80 dB at 1 MHz, and the large-signal transient response is good. The circuit is very stable. The offset voltage and temperature coefficient of this circuit depends entirely on the specs of the op amp you choose....  

Port-Powered Temperature Meter:    This is a four-channel temperature measurement adapter that works without external power supply. It will suitable for measuring temperature and logging its data with a PC.  (added 10/05)

Precision Peak Detector uses No Precision Components:    06/10/04 EDN Design Ideas  /  (added 1/05)  When you need a precision peak detector, you would usually implement it with one or several op amps and a few other associated components. This technique usually works well unless your design requires operation higher than a few kilohertz.

Radio Spectrum Monitor:    This is an experimental project to analyze radio band in FFT.  (added 10/05)

Reducing RFI Rectification Errors in In-Amp Circuits:    AN-671 Analog Devices Application Notes  (app note added 2/06)

Revolution Meter:    Revolution meter by measuring method of strobe synchronization. It can measure up to 100,000 rpm in two ranges.  (added 10/05)