This well-known siren configuration using complementary transistors is from a 1980s documentation. The transistors can be the BC548 and the BD136 and the common speaker. Capacitors can be altered to change effects.
| Clique na imagem para ampliar |
This well-known siren configuration using complementary transistors is from a 1980s documentation. The transistors can be the BC548 and the BD136 and the common speaker. Capacitors can be altered to change effects.
