Low-pass filter


Posted on Sep 18, 2012

This circuit is useful where fast signal acquisition and high precision are required, as in electronic scales. The filter's time constant is set by the 2 ohm resistor and the 1 µ capacitor until comparator No. 1 switches. The time constant is then set by the 1.5 ohm resistor and the 1 jtF capacitor. Comparator No. 2 provides a quick reset.


Low-pass filter
Click here to download the full size of the above Circuit.

The circuit settles to a final value three times as fast as a simple 1.5 ohm—1 µ¥ filter, with almost no dc error.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

12VDC Fluorescent Lamp Driver
Personal Message Recorder Circuit
OddWatt Audio 5751 SRPP / KT88 Push-Pull Monoblock Tube Amplifier Kits
Circuit-break locator for the holidays
microphone amplifier 20khz 12v
car battery charger circuit
keypad floating voltages
1W FM Transmitter Circuit
AVR Microcontrollers in Linux



Top