This circuit makes an incandescent lamp blink in order to vary its brightness with a candle effect. The circuit is from an old Popular Electronics, but the components used are current.
Found in a 1960 General Electric documentation, this crowbar circuit blows the fuse in case of...
This circuit was originally designed for testing crystals used in color televisions, but it works...
This bridge-biased transistor test circuit measures gain in the range 0 to 300. Circuit is from...