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> 100 pcs NSM3915 integrated led bar graph assy
100 pcs NSM3915 integrated led bar graph assy
PRICE IS FOR LOT OF 100 PCS NATIONAL SEMICONDUCTOR NSM3915 10 SEGMENT LED BAR GRAPH ASSYWITH INTEGRATED COMPARITOR IC NEW - FACTORY PACKAGED PARTS LOGARITHMIC RED LED DISPLAYBAR or DOT DISPLAY MODE - SELECTABLE MODULES ARE END STACKABLE UP TO 10 ARRAYS (100 SEGMENTS) LED CURRENT (BRIGHTNESS) PROGRAMMABLE STABLE INTERNAL VOLTAGE REF FOR FULL-SCALE INPUTS FROM 1.2V to 12V INPUT CAN OPERATE DOWN TO GROUND SIGNAL INPUT UP TO 35V - NO DAMAGE USE FOR POWER METER, S METER, PROCESS CONTROL IND, GAUGES, ETC. GOLD PLATED CONTACTS & PCB TRACES SIZE: 1.99" W x 0.85" H LARGE QUANTITY AVAILABLE The NSM3915 is a functional replacement for a variety of conventional meters. It combines a 10-element LED array and a monolithic integrated circuit display driver. Successive LEDs light as the analog input voltage level increases past prescaled threshold points set on 3dB intervals. The driver circuit contains an adjustable voltage reference which precisely sets LED thresholds. Current drives to the LEDs are regulated and programmable, eliminating the need for resistors. The entire display can operate from supply voltages as low as 3V and as high as 24V. The internal voltage reference is also connected to an accurate 10-step voltage divider, supplying reference voltages for 10 individual comparators. These comparators switch as the signal voltage exceeds the established thresholds. The typical overall accuracy is < +/- 1dB. A high impedance input buffer accepts signals down to ground, yet protects against signal inputs of 35V above or below ground. A single (mode) pin changes the display from a bar graph to a moving dot display. The NATIONAL SEMI NSM3915 and THREE-FIVE SYSTEMS TSM3915 are identical parts, data sheets & technical info is plentiful on the web. PLEASE USE LINKS BELOW FOR DATA SHEETS http:// /search.php?q=NSM3915* http:// /search.php?q=TSM3915* For circuit ideas and examples, Use Link Below to Excellent 25 pg LM3915 Data Sheet (LM3915 is very similar to NSM3915 without the LEDs & PCB) http:// /ds/LM/LM3915.pdf Please see other listings - - Thanks for Looking - -
