| Metronome v3 |
Another version of metronom with NE555. |
2.86 |
983 |
| Microphone amplifier with parabolic plate |
Audio microphone amplifier with parabolic plate. |
2.90 |
2,197 |
| Mini buzzer at 12V |
Mini buzzer at 12V. |
2.85 |
4,090 |
| Mini megaphone/amplifier with 2 transistors |
Mini megaphone/amplifier with 2 transistors. |
2.88 |
2,336 |
| Morse code practice keyer v1 |
Simple Morse-code practice oscillator. |
2.84 |
1,200 |
| Morse code practice keyer v2 |
Practice your morse-code with this circuit. |
2.89 |
931 |
| Mosfet audio amplifier 200W/350W |
Mosfet audio amplifier 200W at 8 ohms, 350W at 4 ohms. |
2.88 |
7,819 |
| Mosfet audio amplifier 350W |
MOSFET audio amplifier 200/350W. |
2.91 |
6,002 |
| Noise generator |
Noise generator using zener diode. |
2.91 |
1,614 |
| Oneway IR audio link |
Oneway IR audio link, transmitter and a receiver. |
2.93 |
2,605 |
| Preamplifier with ECC82 |
Great high quality preamplifier. |
2.88 |
2,843 |
| RIAA phono amplifier |
RIAA phono amplifier for amplification of signal picked-up with a crystal. |
2.89 |
1,066 |
| Reproduction and sound recording using PIC |
Reproduction and sound recording using PIC and BTC algorithm. |
2.88 |
2,724 |
| Simple FSK modulator |
Simple FSK modulator. |
2.95 |
1,866 |
| Siren at 3V |
Nice little siren operating at 3V. |
2.88 |
2,319 |
