The transistor used in this circuit is uncommon today. AC124 or equivalent such as AC188K and 2N2431 can be used. The circuit is from the 80's and makes use of transformers.
June 2017 - The new non-polarized SMT aluminum electrolytic capacitors from Wurth Electronics can...
Varicap or varactor is the basic component used in this circuit of an American 80's documentation. The...
April 2017 - Texas Instruments bq51222 integrated circuit for chargers and other Qi wireless power...