The majority of photographers prefer flashlights with Autonomous nutrition. Such pulsed lamps series production receive a charge from battery Lightning or from Converter low voltage dry cells in high. But Lightning rarely on sale and stored for long. Batteries not to satiate kit is barely enough to shoot two narrow tapes. Here we have perforce to get attached to a wall outlet.
From this predicament I found out using alkaline Nickel-cadmium nonspillable battery brand NK-20. Its advantages lightness, durability and the possibility of recharging. Power the flash needs to assemble the drive voltage (see circuit diagram). The Transformer T1 wound on a core SH1 5X15. The winding of I contains 18+18 turns of PEV-1 0,41, II - 12+14 turns of PEV-1 is 0.2 and III winding 300 turns of PEV-1 to 0.1. Resistor - MLT-1 or VS-1, the capacitor oxide CAM or K50-6.
Schematic diagram
If the device after Assembly will not work (can not hear the characteristic "singing"), reverse the findings of the collector winding.
The Converter is housed in a plastic case the size of HH mm, for example in the case of metaplace.
I use the flash "Beam-70". The inverter and battery freely placed in the slot for the battery "Molniya".
The charging time when this switch is set the flash to "100 j - 35, the "50 j" it is with 10, providing sufficient efficiency in the time of the shooting.
If the flash is idle for more than five days, before you start shooting it you need to train, as required by the manual, and then reliability will be ensured.
Author: A. Turovtsev