Electrical current sensors measure AC and/or DC current levels.

Signal converters contain inputs for one type of signal and outputs of another.

Voltage-to-frequency converters accept a voltage signal and convert its analog level to a signal with a corresponding frequency

Charge converters and charge amplifiers convert the charge output from a piezoelectric, capacitive or other charge-producing sensor to a signal such as analog voltage or current

Current sense amplifiers are integrated circuits with operational amplifiers and sense resistors that are used in measuring the amplitude and direction of current in circuits

Current loop converters convert an analog or digital signal to a current loop output such as 4-20 mA or 0-20 mA

DC-DC converter chips provide a regulated DC voltage output from a different, unregulated input voltage.