Switch closure

Temperature switches are also part of the temperature instrument fami ly. Although not sophisticated, entire compressors are influenced by the temperature switch. It is now becoming more popular to take a thermocouple. signal to the computer and generate a switch closure as part of the computer signal. 

Uj) Telemetry Tests (Low Spin and Low Acceleration). The purpose of these tests is to investigate the performance of fuzes used with ammunition of low acceleration and spin parameters, such as the recoilless rifle and mortar projectiles. The techniques require the use of FM transmitters potted into the projectiles for transmitting such information as switch closure and electrical charge generation in flight. The telemetry transmitting station, like the transmitter in the round, are both assembled from std radio components modified for these particular tests (p IIIB-22 of Ref 39)... 

Some programming schemes require dual interlock, where a reed switch must be closed before the device will be able to accept programming commands. Reed switch closure can also instruct the pacemaker to transmit a signal. This can be used as a locator beacon to properly align the programming wand. 

Event Driven—Write software to sequence on events (switch closures) rather than time. Counters, Timers, and One-Shots shall be used only if necessary. If they are used, use as many conditions as practical. 

Amino molding compounds can be compression, injection, or transfer molded. Urea molding compound has found wide use and acceptance in the electrical surface wiring device industry. Typical appHcations are circuit breakers, switches, wall plates, and duplex outlets. Urea is also used in closures, stove hardware, buttons, and small housings. Melamine molding compound is used primarily in dinnerware appHcations for both domestic and institutional use. It is also used in electrical wiring devices, ashtrays, buttons, and housings. 

Consider the simple switching circuit of Figure IS.I9ic). If we w ish lo find Ihe current through the impedance Zi. on Ihe closure of Ihe sw itch. S. then ... 

Since the low-pressure float needs a solenoid valve for tight closure, this valve can be used as an on-off control in conjunction with a pre-set orifice and controlled by a float switch (Figure 8.2). 

Since excess pressure indicates malfunction of part of the system - usually a condenser fault or incorrect closure of a valve - the high-pressure switch should be reset manually, not automatically. 

Using a ring magnet with an axial motion, three closures can be obtained (Fig. 5.11). This method offers short switching distances and low sensitivity to stray magnetic fields. If a single operation is required, a very accurate adjustment is necessary. 

Sockets, switches, relays, electrical and electronic connectors, fuse holders, closures... Chip carriers... 

Uses. In the semiconductor industry for the production of switches and closures the pharmaceutical industry for cardiac imaging manufacture of optical glass formerly used as a rodenticide and insecticide until banned in the US in 1972. 

Thalhum and its compounds have limited apphcations. It is used in insecticides and rodenticides. Thalhum-mercury alloys are used for switches and closures for use at sub-zero temperatures. Another application is in making low melting glasses for electronic encapsulation. Thallium sulfide is used in photocells. 

The use of ionization pins or pin switches in the measurement of detonation velocity was described in Vol 4, pp D632-638. Their principle of operation is the closure of an electric circuit by the ionization associated with a detonation wave. The latest pin switch techniques are described in Ref 11... 

---