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Electrical/Electronics . . . SWITCHING
DEVICES
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| [incl/99dfx.htm]
Electrical/Electronics . . . SWITCHING
DEVICES
Free Info - Circle 526
Free Info - Circle 527
Free Info - Circle 522
Free Info - Circle 523
Free Info - Circle 577
Free Info - Circle 529 [incl/99dfx.htm] |
Miniature automotive relay switches.The FTR-P3/P4 Series is an
ultraminiature, high-contact capacity automotive relay series that is 35% smaller by
volume than the previous generation device. Each 1Form C relay has a contact rating of 25A
at 14 VDC locked motor load, and a maximum switching current of 25A at 16 VDC. The relay
is effective for heavy-load, motor reversal applications. Fujitsu Takamisawa America,
Sunnyvale, 
Liquid level sensor.The LDS liquid level sensor offers close
differential switching between "on" and "off" with the repeatability
and reliability of reed switch operation, making it ideal for applications requiring tight
control. Featuring a 20 deg. maximum float actuation reference from the center, the
sensors provide a choice of two construction materials -- Nylon 6,6 or glass-filled
polypropylene -- and silicone or nitrile seals. Power Components of Midwest Inc,
Mishawaka, IN. 
Hermetically sealed switch. The long-life 6600 Series switch
is designed for harsh environments where extended hermetic seal integrity of the switch is
critical. With the use of a nickel bellows actuator inside the switch, the switch's useful
life increases from 25,000 to 500,000 cycles. The corrosion resistant housing withstands
most media. It operates below 5mA at 28 VDC between -65°F to 400°F. Haydon Switch
& Instrument, Waterbury, CT. 
Level switch. The KNQ level switch is a compact capacity proximity
switch that detects the level of liquids or solids in a non-metal sight glass. Designed
for level sensing in bulk powder materials handling applications, the low-profile,
rectangular switch mounts onto a sight glass with a strap and mounting clip. It features a
charge balance circuit that provides better noise immunity than conventional proximity
switch designs. efector inc, Exton, PA. 
Dual function pressure/vacuum switch. The MPL-501-P-V dual
function switch is capable of replacing two separate switches in applications requiring
both pressure and vacuum sensing, such as sip-and-puff controls for mouth-actuated
devices. The switch can sense both pressure and vacuum input in a common port and will
switch two separate circuits in response. Actuation ranges can be very low (under 1 in.
water column) or higher. Recommended ratings are from 10 to 20mA. MPL,
Pompano Beach, FL. 
3-terminal semiconductor switches.These solid-state,
normally-closed switches come in three packaging options: SOT-23, TO-92, and TO-220. They
do not require separate power supply leads. Logic level controlled by 20 micro-amps, QBAR
ICs are monolithic devices with a CMOS TTL compatible Schmitt trigger input, hysteresis,
and can switch 175 mA at up to 20 VDC in 2 microseconds. BitParts Inc,
Sudbury, MA.