tracking transmitter circuit Tags - Electronic Circuit Diagram https://circuitdiagram.net/tag/tracking-transmitter-circuit Schematic & PCB Design Tue, 10 Mar 2015 01:42:03 +0000 en-US hourly 1 https://i0.wp.com/circuitdiagram.net/wp-content/uploads/2016/10/cropped-ecd.jpg?fit=32%2C32&ssl=1 tracking transmitter circuit Tags - Electronic Circuit Diagram https://circuitdiagram.net/tag/tracking-transmitter-circuit 32 32 96547142 4 Transistor FM Tracking Transmitter https://circuitdiagram.net/4-transistor-fm-tracking-transmitter.html https://circuitdiagram.net/4-transistor-fm-tracking-transmitter.html#respond Sat, 14 May 2011 16:12:45 +0000 http://circuitdiagram.net/?p=940 The following diagram is the FM tracking transmitter based on 4 transistors. No additional notes for this tracking transmitter diagram, try to discover this circuit by yourself.. 🙂 Components list: R1 = 100K Ohms R2 = 10 Ohms R3 = 47K Ohms R4 = 220 Ohms C1 = 4.7uF/16V C2, C5 = 1nF C3 =… Read More »

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]]> The following diagram is the FM tracking transmitter based on 4 transistors. No additional notes for this tracking transmitter diagram, try to discover this circuit by yourself.. 🙂

4-transistor FM tracking transmitter

Components list:
R1 = 100K Ohms
R2 = 10 Ohms
R3 = 47K Ohms
R4 = 220 Ohms
C1 = 4.7uF/16V
C2, C5 = 1nF
C3 = 10 – 40 pF trimmer capacitor
C4 = 4.7pF

Q1 = 2N3906 PNP transistor
Q2, Q3, Q4 = 2N3904 NPN transistor
L1 = 4-5 turns of 22 ga. magnet wire close wound around 1/8″ non-conductive core
Antenna = 10 to 12″ hookup wire

With wide voltage supply (3-9v), this FM tracking transmitter can used 3V or 9V battery to operate.

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