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STD FM-TRANSMITTER
Project Status:
Ongoing
License: Public Domain
- 3
Description
Small size FM transmitter, that allow you broadcast sound at 87.5-108.0 MHz.
*TESTED*
**Transistors:**
- 2N3904 - 2
**Resistors:**
- 100k Ω - 1
- 100Ω - 1
- 1M Ω - 1
- 1k Ω - 1
- 10k Ω - 3
**Inductors:**
- 0.1µH inductor (Air coil)
**Capacitors:**
- 0.1µF - 2
- 30 pf trimmer - 1
- 4.7 pF - 1
- 10pF - 1
**Other:**
- Antenna
- 12V power source
- PCB
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 10k | R1,R2,R7 | AXIAL-0.4 | 3 |
| 2 | 1k | R3 | AXIAL-0.4 | 1 |
| 3 | 100 | R4 | AXIAL-0.4 | 1 |
| 4 | 100k | R5 | AXIAL-0.4 | 1 |
| 5 | 1M | R6 | AXIAL-0.4 | 1 |
| 6 | 0.1uH | L1 | W12_H1.5 | 1 |
| 7 | 0.1uF | C1,C3 | CERAMIC CAPACITOR TH SMALL | 2 |
| 8 | 10pF | C4 | CERAMIC CAPACITOR TH SMALL | 1 |
| 9 | 4.7pF | C5 | CERAMIC CAPACITOR TH SMALL | 1 |
| 10 | DC21P | U1 | DCSKTP | 1 |
| 11 | 30pF | C2 | VARIABLE_CAPACITOR | 1 |
| 12 | 2N3904 | Q1,Q2 | TO-92(TO-92-3) | 2 |
| 13 | SMA connector | AV1 | CON-SMA-L | 1 |
| 14 | SWITCH | S1 | HDR1X3 | 1 |
| 15 | Stereo Jack Jack Socket | J1 | SOCKET AUDIO JACK 3.5MM PJ30070 TH 5-PIN | 1 |
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Project Members
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3
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