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Posts tagged 4 तत्व

Circuit diagram 75 Meter QRP SSB Transceiver

The 75 Meter QRP SSB Transceiver Theory of Operation 6-30-03 In general, the transceiver switches the 4-element 1500 ohm xtal BPF ends between the inputs and outputs of the two SA602s to reverse the signal flow for R/T operation. Since no IF amplifier is used in the design, 20 dB of additional receiver gain is […]

Simple electronic circuits

Police Siren simple electronic circuits R1 ………….. 27K ohm R2 ………….. 68K ohm R3 ………….. 56K ohm R4 ………….. 470 ohm C1 ………….. 50uF – 12V C2 ………….. 0,018uF – 25V TR1 …………. FCS9013 TR2 …………. FCS9012 S1 ………….. Push Switch Police Siren simple electronic circuits using FCS9013, FCS9012

Head Phones tube circuit

Head Phones tube circuit BC1004 The BC1004 based OTL headphone amplifier circuit

Quality Inverter-Chargers

Quality Inverter-Chargers Quality Inverter-Chargers using 2N2222, 74AUC1G14DBVR High Quality Inverter-Chargers High amp charger circuit diagram Inverter charger circuit diagram using 2N2222, 74AUC1G14DBVR

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 […]

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