| 摘要 |
PROBLEM TO BE SOLVED: To attain size and cost reduction in an auxiliary power supply circuit which supplies very small current of low voltage. SOLUTION: This auxiliary power supply circuit is provided with a solar battery module 2, consisting of a light emitting element 3-which applies voltage through a resistor 5 for light emitting and a solar battery 4, which receives the light from the light emitting element 3 and generates voltage. The generated voltage from the solar battery 4 of the solar battery module 2 is supplied as the operating voltage of the circuit operating with the small power of a circuit delivering the on and off data of a contact 6 via a photocoupler 10.
|
