This source, found in a publication from the 1980s, uses an integrated circuit that is uncommon today. The transformer has a secondary of 300 mA to 500 mA and the capacitors must be electrolytic.
This source, found in a publication from the 1980s, uses an integrated circuit that is uncommon today. The transformer has a secondary of 300 mA to 500 mA and the capacitors must be electrolytic.