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Posts tagged 27 MHz CB radios

27MHz CB Band Circuit

27MHz CB Band Circuit Using TR SC1675, SC828, SA564, SA715,SC1383, SC1909 and IC TA7205

Circuit electronics to determine the humidity of the room

Circuit to determine the humidity is a comparator, which detects the temperature change is very small in relation to the ambient temperature environment. Parts: R1_____________22K Linear Potentiometer (See Notes) R2_____________15K @ 20°C n.t.c. Thermistor (See Notes) R3_____________10K 1/4W Resistor R4,R5,R7,R9____22K 1/4W Resistors R6____________220K 1/4W Resistor R8______________5K 1/2W Trimmer Cermet R10___________680R 1/4W Resistor C1_____________47µF 63V Electrolytic […]

DC power converter

DC power converter 12V DC to 120V DC The most obvious approach would be to make a DC power converter 12V DC to 120V DC, output at 50 or 60 Hz, but this requires a rather large and heavy transformer. So it’s better to use a high frequency, at least 25kHz, so a very small […]

Fm Receiver Radio Digital Circuit

Fm Receiver Radio Digital Circuit using SP3232EB, PIC24FJ64GA002, LM1117, LM7805

180 W Amplifier Circuit

180 W Amplifier Circuit With BC179, BC337, BC327, TIP42, TIP41 Transistor The function for this circuit is an audio amplifier capable of delivering a decent output power with a minimum no: of parts , with considerable sound quality. Component: BC179, BC337, BC327, TIP42, TIP41 Transistor, Resistor, Electrolytic Capacitor, Ceramic Capacitor.

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