Circuit for turning on a charging-completion indicator separate from a flash unit

摘要

In a flash unit, wherein completion of the charging of a main capacitor from a DC-DC converter is indicated by a first indicator connected to the converter by a first voltage dividing circuit, there is provided a second voltage dividing circuit connected to the DC-DC converter and a switching circuit disposed between the second voltage dividing circuit and the first indicator so that an output voltage sufficient to energize a second (separate) indicator reliably is produced from the second voltage dividing circuit upon operation of the first indicator.