Incremental encoder
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An incremental encoder is a linear or rotary electromechanical device that has two output signals, A and B, which issue pulses when the device is moved. Together, the A and B signals indicate both the
Rotary incremental encoder with shaft attached to its thru-bore opening
A PCB-mounted, rotary mechanical incremental encoder
Differential output waveforms from an incremental encoder
Electronic equipment controls are often implemented with a knob attached to a mechanical encoder (shown with detached knob)
Push–pull output
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A push–pull amplifier is a type of electronic circuit that uses a pair of active devices that alternately supply current to, or absorb current from, a connected load. This kind of amplifier can enhanc
Transformer coupled vacuum tube push-pull audio amplifier from 1924. The two triode output tubes are on right.
A Magnavox stereo tube push–pull amplifier, circa 1960, utilizes two 6BQ5 output tubes per channel. The two pairs of push-pull tubes are visible in front of the output transformers.
Typical transistor output stage of one channel of a 65 watt stereo amplifier from 1993. The 2 MOSFET push-pull output transistors (FET2, FET4) are bolted to the black heat sink. They are driven by transistors Q2, Q5, Q6, and Q7