User Manual

3
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Connections, signals, signal descriptions
FLD-nano can be controlled in manual mode. In this case, jumper is set
between PINs 1 and 2 of INTERFACE connector in order to use VOLTAGE
PROGRAM trimpot. To obtain a trigger pulse immediately after charging a
storage capacitor to output voltage level (manual autorun mode), set a
jumper between PINs 8 and 7. ENABLE jumper between PINs 5 and 6
allows the driver to run. It could be convenient to interconnect PINs 5 and 6
using a button instead of jumper.
Other possibility to control FLD-nano is to use an external controlling
device, which sets the storage capacitor voltage level (0-5V to PIN 1) and
sends TTL pulses to PIN 8 to initiate pulses to trigger transformer.