This amplifier was found in a 1970s documentation. Darlington transistors can be replaced for modern equivalents of at least 80 V x 2 A, equipped with good heat sinks.
This simple audio booster came out in a Popular Electronics in the 90s. It serves as a booster for very...
Found in American documentation from the 90s, this circuit makes use of common components. The load must...
Wired to the output of any amplifier this circuit makes an incandescent lamp flash according the...