| 摘要 |
An electronic events counting device including a piezoelectric transducer responsive to the incidence of parts on a detecting plate and operative to produce an electrical signal. The electrical signal is amplified and fed to detecting means which, if the signal is of predetermined magnitude, energizes a coil for sufficient period of time to advance a count display device. After advancement of the count, the coil is automatically deenergized in readiness for a next part to be counted.
|
