The 2771C from Endevco Corp.
, San Juan Capistrano, CA, is a low-noise remote charge converter that transforms a piezoelectric transducer's high-impedance charge output to a low-impedance voltage proportional to the transducer's charge output. Frequency response is 0.4–50 kHz; constant current range is 4–20 mA; and fixed gains are 0.1 mV/pC, 1.0 mV/pC, or 10 mV/pC. The device operates in temperatures from –40°F to 212°F, withstands shock loads up to 100 g peak, and radiation up to 1.0 MRads. It also supports IEEE 1451.4 TEDS.