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2. Piezo switch - Wikipedia

   en.wikipedia.org/wiki/Piezo_switch

   Piezo switch. A piezo switch is an electrical switch based on the piezoelectric effect . The charge generated by the piezoelectric element in the switch is typically used to turn on an integrated semiconductor device such as a field effect transistor (FET), causing the switch assembly's output to be active, or "on". [ 1] When the FET is on ...

3. Vandal-resistant switch - Wikipedia

   en.wikipedia.org/wiki/Vandal-resistant_switch

   Vandal-resistant switches are often low-voltage, low current, so-called "signal" types intended to trigger a change in state, perhaps from "off" to "on" and vice versa. The mechanical types often have gold -plated contacts that do not corrode, to allow reliable low-power switching. [2] A few types are capable of switching 120 or 220 V AC power ...

4. Electrical connector - Wikipedia

   en.wikipedia.org/wiki/Electrical_connector

   Locking mechanism designs include locking levers of various sorts, jackscrews, screw-in shells, push-pull connector, and toggle or bayonet systems. Some connectors, particularly those with large numbers of contacts, require high forces to connect and disconnect.

5. Pull switch - Wikipedia

   en.wikipedia.org/wiki/Pull_switch

   The most common use of a pull switch is to operate a ceiling electric light. The ceiling fan and mechanical wall fans are also appliances often operated by pull switches. Pull switches may be either two-position (open or closed) or multi-position (allowing for different fan speeds or levels of illumination). Mounted inside a pull switch, there ...

6. Push–pull converter - Wikipedia

   en.wikipedia.org/wiki/Push–pull_converter

   A push–pull converter is a type of DC-to-DC converter, a switching converter that uses a transformer to change the voltage of a DC power supply. The distinguishing feature of a push-pull converter is that the transformer primary is supplied with current from the input line by pairs of transistors in a symmetrical push-pull circuit.

7. Push–pull output - Wikipedia

   en.wikipedia.org/wiki/Push–pull_output

   A digital use of a push–pull configuration is the output of TTL and related families. The upper transistor is functioning as an active pull-up, in linear mode, while the lower transistor works digitally. For this reason they are not capable of sourcing as much current as they can sink (typically 20 times less).