The EDU-LAB Ticker Tape Timer has a frequency of 50 to 60Hz, equivalent to that of the mains power supply and is supplied with one roll of ticker tape and a pack of carbon discs. It will give good results if operated from a 12V AC power supply unit. Higher voltage causes the tape to be subject to a greater drag. There are also 12V units available - check your unit rating before connecting the unit. This device uses an electromagnet which activates a striker, producing dots via a carbon disk on the ticker tape. The dots are produced at a rate of 50-60 MHz depending on the mains frequency. The Ticker Tape Timer is used in the measurement of velocity, acceleration and general timing.
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