Voice amplifier transistor


Posted on Dec 11, 2010

Dctl is a two-stage amplifier, the first stage amplifying transistor VT1 collector voltage U


Voice amplifier transistor
Click here to download the full size of the above Circuit.

and by vt2 1 proportional to current rf, uf through wind and after rf applied sub-base of vt1. circuit gain equal product two magnification. operation given feedback process as follows: when emitter increases, rise high r1, r partial pressure, so ultl increased. vn which makes conduction save degree low, flowing resistor reduction resume normal work, achieve purpose operation, transistor direct-coupled negative put dog, not only has electrical pressure magnification, performance. in circuit, vt1 rf. no bypass capacitor added, indicating that it just a ac feedback. this lost though some magnification + get operation. resistance divided into parts, re2 added g, direct without exchange




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

GP display controller
Electronics Thermometer with description
Dome Drive Schematic
GAS FURNACE OPERATION AND DIAGRAM
KN-Q7 Accessories
8W + 8W tube amplifier circuit
Level 555 a control circuit diagram



Top