The integrated switching element controls the electric circuit to be switched. If a pulse is applied to the piezo disc, terminal 1 becomes positive in relation to terminal 2 due to the voltage generated. This can be either direct voltage (DC) or alternating voltage (AC). The electric circuit to be switched is connected at the terminals 3 and 4. The piezo disc is connected to the terminals 1 and 2. The period that the electronic switch contact remains closed depends on the actuating speed and force as well as on the duration of actuation. After this, the electronic switch contact opens again, even if the force is still present. The voltage generated is converted by the electronic connection into a polarity-neutral, electronic switch contact.ĭuring the voltage drop, the electronic switch contact is closed for the specified pulse duration. The action of force on the piezo disc causes a voltage to be induced due to a charge transfer.
The piezo switch is based on the functional principle of the piezoelectric crystal.
