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It is a steady, and harmonic-free FM transmitter so it is used in a place where we need stable FM broadcast.Keep all the parts as close as could reasonably be expected and utilize a 12-inch wire for the antenna or utilize a 30-inch wire antenna for a more prominent range. The input voltage can be 9- or 12-volts DC. The loop L is equivalent to 8 to 10 turns of #22 enameled wire twisted on 6.30 millimeters breadth structure. The circuit is just utilizing a couple of parts however gives a decent range. The rf circuit that appeared beneath is a smaller than usual stable FM transmitter that is utilizing a Zener diode to give precise voltage to the oscillator while the battery drains, because of which it won’t float its frequency.
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SupportLogout Edit Shortcuts Select which shortcuts you want on your dashboard. There are numerous procedures to produce an FM transmitter stable so it won’t change its frequency as the battery drains. 2N3904 NPN Bipolar Transistor, TO-92 Products Solutions Design Support Company Careers JD JS Joe Smith MyON Dashboard Error message Success message Loading. In this part, we are discussing the operation of the “FM transmitter circuit” which is stable and harmonic-free. 2N3904 MMBT3904 PZT3904 PD Total Device Dissipation Derate above 25☌ 625 5.0 350 2.8 1,000 8.0 mW mW/☌ RJC Thermal Resistance, Junction to Case 83.3 ☌/W RJA Thermal Resistance, Junction to Ambient 200 357 125 ☌/W Device mounted on FR-4 PCB 1.6' X 1.6' X 0.06.
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