The diode is not sold commercially, and is usually manufactured as needed from standard circuit components such as diodes, capacitors, resistors and op-amps.
Examples of displacement-responding sensors include the mechanical action of tracker organs, as well as the force-sensing resistors found in music keyboards that had polyphonic aftertouch capability.
Cadmium: Found in light-sensitive resistors, corrosion-resistant alloys for marine and aviation environments, and nickel-cadmium batteries.
On the Dutch Orry-la-Ville honorary cemetery (north of Paris), her name is recorded on a plaque dedicated to the Dutch resistors.
Individual components such as resistors, capacitors, diodes, printed circuit boards and whole electronic products such as cell phones, PDAs and televisions, eventually fail.
Instrumentation amplifiers can be built with individual op-amps and precision resistors, but are also available in integrated circuit form from several manufacturers (including Texas Instruments, National Semiconductor, Analog Devices, Linear Technology and Maxim Integrated Products).
The behavior of such linear circuit elements as resistors, capacitors, and inductors can be specified by a single number (resistance, capacitance, inductance, respectively).
Other notable inventions include a variable resistor used in guided missiles and small component thick-film resistors for computers.
For instance, a circuit board is composed of a bare PCB, ICs, resistors, capacitors, switches, etc.