Multichannel Electronic Counter Chronograph for Determining Detonation Velocities in Explosives

摘要

The multichannel time intervalometer (MTI) was designed and fabricated for use in detonation wave measurements. The electronic chronograph was designed to measure short elapsed time events, relative to a start pulse which results from detonation, occurring during relatively long observation periods. The MTI used a quartz crystal as a frequency source and employs high speed transistor components which are capable of providing accurate measurements of detonation velocities. Attaining this capability in a portable unit with its direct read‐out feature enhances the experimenter's ability to study short duration events such as explosive behavior.