| Preamplifier with ECC82 |
Great high quality preamplifier. |
2.88 |
2,853 |
| Siren at 3V |
Nice little siren operating at 3V. |
2.88 |
2,322 |
| Electronic stethoscope |
Schematics for electronic stethoscope. |
2.88 |
2,028 |
| Ultrasonic generator |
Generates audio signal from 12 to 50 kHz. |
2.88 |
1,497 |
| LM3886 single chip 68W amplifier |
LM3886 single chip 68w amplifier. |
2.87 |
2,348 |
| M250 audio amplifier |
Audio amplifier with 4x MJ15024 and 4x MJ15025. |
2.87 |
3,267 |
| Metronome v3 |
Another version of metronom with NE555. |
2.87 |
985 |
| VU-meter with 6 LED diodes |
VU meter with 6 LED diodes with no power supply. |
2.87 |
3,375 |
| VU-meter with gauge |
Analog VU-meter. |
2.87 |
2,953 |
| IR audio receiver |
Receiver for IR audio modulated signal. |
2.87 |
1,691 |
| FSK demodulator with MC13155 |
FSK demodulator with MC13155. |
2.87 |
910 |
| Small electronic siren |
Siren with two NE555. |
2.86 |
3,894 |
| LED blinker with audio indication |
Circuit that blinks LED and beeps at the same time. |
2.86 |
4,159 |
| Audio amplifier with TDA1514A |
Quality and reliable amplifier with TDA1514A. |
2.86 |
12,537 |
| Audio communication over mains 220V |
Audio communicator over mains power network - 220V. |
2.86 |
8,439 |
