Microphone preamplifier with TLC251


Posted on Mar 16, 2013

A microphone preamplifier using: om CMOS op amp with its own battery, is small enough to be placed in a case of small microphone. The amplifier operates from a 1.5V battery cathode mercury low supply currents. This preamp will operate at very low power and maintain a reasonable frequency response as well. The TLC251 is operating in low bias (operating at 1.5 V) draws a supply current of only 10 and has a year - frequency response of 3 dB 27 Hz to 4.8 kHz. With 8-pin grounded, which is designated as the polarization state high limit increases above 25 kHz.



Microphone preamplifier with TLC251 - image 1
Click here to download the full size of the above Image.

Supply current is only - 30 pA under these conditions.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Pushpull Amp
disco lighting
Auto Microphone Muter
27MHz CW transmitter
Lamp-flasher
Stereo-power-meter
Sine Wave To Square Wave Converter Circuit
Chinook II System
OP37 low noise microphone preamp circuit design electronic project
Sending Data Over IR Wireless Infrared Communication Link System
Tube-based Buffer amplifier
Automatic light control one lamp lighting circuit b
2Y-Y-2 - connection four-speed motor contactor control circuit
High-rise residential walkway lighting control circuit
PA ultra-CPI



Top