For some special applications, the best solution is often a custom design. Stroboscopes are used in a wide variety of situations such as viewing or monitoring complex machinery or recording events with photography.
For example, a synchronized-flash two lamp unit that is useful in open shutter photography. One lamp is usually positioned to provide the primary illumination, while the second lamp is used to minimize unwanted shadows. This particular unit has a flash rate of 180-1200 FPM and was used to take the photographs of the table tennis balls and the billiard balls in our printed brochure. The long, front-connected cable for push-button flash control assures the photographer maximum freedom to move around and devote full attention to the cameras.
High-intensity stroboscopes offer a wide range of features to meet most industrial or classroom applications. The separation of the lamp from the power unit makes possible numerous uses that might otherwise be very awkward.
Typical special features that can be included are photoelectric and magnetic pick-ups to provide external triggering by the object to be studied. Time delay of the trigger signal, often called phase control, may be incorporated to view components whose position is in some way time related to that signal.
Sometimes an electrical input trigger signal is already available, in which case all that is needed is a suitable input jack. A timer may be incorporated to automatically shutdown power after a selected time interval. This is very helpful in extending lamp life when a process requires frequent monitoring.
There is considerable latitude in selecting the size of the flash capacitor; it all depends on the maximum flash rate that will be required. It is usually desirable to increase the per flash intensity as much as possible when operating at low speeds. There is a trade-off between the size of the flash capacitor and the highest possible speed, so it’s very important not to specify a maximum speed that is higher than what is really necessary.
The maximum flash rate of units in the high-intensity series is almost always set below 5,000 FPM but higher speeds can, of course, be specified. There are some standard models in this series that are more fully described in individual bulletins that are available on request. International line cord plugs can be furnished on special order.