This commercial receiver from the year 1958 uses two AA cells as Power supply. The circuit is intend to receive MW station and the transistors are germanium types not easy to find today.
This small shaver bender circuit makes it possible to use 220/240 V shavers on 110 V networks. The...
This receiver for the mid-wave band was found in a documentation from the 60's. The transistors are made...
This circuit, which uses only common transistors, was obtained from a 1988 publication, but can be...