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Photo-flash charger minimizes parts count : 10/22/98 EDN-Design Ideas / (added 2/06) Photo-flash and strobe devices
operate by discharging a high-voltage capacitor into a bulb. Charging the capacitor from a battery or other low-voltage source requires a step-up dc/dc converter to boost the voltage,
typically to 300V. One way to generate the high voltage is to use a flyback converter. The circuit in Figure 1 provides a simple and reliable way to charge a high-voltage capacitor. The
flyback converter performs two functions: It boosts the low-voltage input and provides isolation between the input (battery) and output (high voltage). Its main components are the power
transformer; the output diode; the output capacitor; and the MIC3172 controller chip, which combines the switching transistor, voltage regulator, and control logic....
Trigger Circuit for Strobes: circuits which can be used for triggering stroboscopes from external signals (added 6/03)
Welch Scientific Model 2153C Stroboscope: a schematic for a typical line operated variable rate Strobe used for the
visualization of moving parts as well as rotation speed or frequency determination of rotating or vibrating machinery (added 4/02)
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