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Posts tagged Amplifier Circuit Board

Electronics Projects

Electronics Projects Electronics Circuit IC LM386 Alarm circuit Buzzer Ultrasonic Electronics Circuit Collection of LM386 Data sheet Home intercom Microphone circuit Walkie talkie Amplifier Circuit Board

Circuit diagram DTMF Decoder using HT9032A MT88L70 HT9202H

Circuit diagram DTMF Decoder using HT9032A MT88L70 HT9202H This exciting project and something that many have been developed, but always remains to add some improvements. The DTMF decoder circuit for distinguishing some separate external components to produce devices capable of sending binary code from a button on the multi-tone phone. This circuit, in addition to […]

DC Power Supplies with Remote

DC Power Supplies with Remote DC Power Supplies with Remote circuit modules using MTP75N06, SG3525, BC549 Variable Programmable DC power supply 30v to 12v, some DC–DC converters include “Remote Sense” connection points

need schematic diagram RCA ac/dc TV set, model E09304WH, chassis TX825NC. AC power supply resistors burned up.

Bernie H asked: The model no. and chassis no. are on the back of the set, not on the remote. Date of manufacture Oct. 1995. Small portable TV set 115v./12v for RV use. Works ok on 12 volts, 3 or 4 resistors in 115v circuit fried.

Make 2.45GHz RF Signal Detector

Make 2.45GHz RF Signal Detector This passive RF indicator is made from a few simple parts.  A 100uA moving coil meter is used to display the relative intensity of the RF signal.  This circuit can be used with some cellphones and many cordless telephones.

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