How the step switch makes a decimal counter

Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle

KT2520K26000DCW28QAS import spot

As shown, a set of step switches can be used as a decimal counter to record the number of cards passing through the 1BM Model 523 punch. In the initial application, the number of the contact pins of the step switch was applied to the card, and other control functions not shown therein were also performed. The auxiliary relay broadens the 13 mm pulse from the punch to ensure that the step switch operates correctly and also issues an alarm signal when the step switch is not in progress.