Digital-peak-detector


Posted on May 24, 2012

The peak detector tracks and holds, using the charge-storing ability of a capacitor, the highest output voltage from a transducer. Initially, the voltage on the inverting input of the comparator is at ground level. As a small voltage (0-5 V) is captured by the peak detector and presented to the comparator`s noninvert· ing input, the output will swing high, which asserts the bilateral switch; clock pulses now pass through the switch to clock both the BCD and binary counters. The outputs of the binary counters are connected to an R2R ladder network, which functions as a digital-to-analog converter. The author of this great circuit is Mr. Roger D. Secura.


Digital-peak-detector
Click here to download the full size of the above Circuit.

As the binary count increases, the R2R ladder voltage also increases until it reaches a point slightly above the voltage of the peak detector; at that instant, the comparator output swings low, which disables the bilateral switch and stops the counters. The number displayed on the 7-segment LED"s will represent a value equivalent to the transducer"s output.





Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Active Noise-Canceling Headphones
500W 12V to 220V inverter
Three-year-led-flasher
9400 Selling Leads 9400 Datasheet PDF
Crystal Oscillator - Parallel Resonant
alphanumeric lcd as counter
mic preamplifier circuit based tlc251
IR Remote Control Jammer With 2N4403 PNP Transistor
5V Power Supply For On-Train Radio Camera
The Mainline TT/L FSK Demodulator
CD4520 CD4511 CD4067 digital automatic inspection circuit diagram
Keying oscillator circuit



Top