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Posts tagged decoder

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 […]

TDA1591 stereo decoder schematic

TDA1591 stereo decoder schematic TDA1591 stereo decoder schematic

Led circuit – Power Supply

Led circuit – Power Supply Led circuit for the Power Supply using BD139 Power Supply circuit – 16VAC x 2 (ct) to 39v using ZD30v Led circuit for the Power Supply The size of the LED and resistor to supply some tips on supply, and of course will provide many details about the LED driver […]

Broadband peak detector circuit

Broadband peak detector circuit using LM393

Flame detection circuit diagram

Fire alarm beeping circuit diagram flame detection circuit flame detector sensor flame detector principle    

How to Make 2.3 GHz Pre-Amp (Part 1)

This article is own by Grant Hodgson. . Eagle-eyed readers may have noticed the reference to an ATF-54143 in John G3XDY’s notes on the pre-amplifier testing results at the November Adastral Park round table, published in the March 2002 Newsletter. Here are some more details of this pre-amp which has some rather interesting properties :- […]

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