{"product_id":"comparator-relay-board-using-lmv331","title":"Comparator Relay Board using LMV331","description":"\u003cp\u003eThis comparator relay board is a simple and flexible solution that can be configured for a wide range of applications, such as automatic light\/dark switching, over-voltage and under-voltage protection, over-current and under-current detection, pressure-based switching, temperature control, and interfacing with various analog sensors.\u003c\/p\u003e\n\u003cdiv class=\"simple-alert-boxes sab_info sab_normal\"\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e All resistors and capacitors on the board use SMD 0805 packages. Users may populate only the required components; unused component positions can be left unpopulated.\u003c\/div\u003e\n\u003cp\u003eFor 5V applications, the board can be build with the \u003cstrong\u003eLMV331\u003c\/strong\u003e comparator in a SOT-23 package. For higher-voltage applications, the \u003cstrong\u003eTL331\u003c\/strong\u003e comparator can be used, which supports supply voltages up to \u003cstrong\u003e36 V\u003c\/strong\u003e. When operating at 5 V, a 5 V relay is recommended. For higher supply voltages, it is recommended to use a 12 V or 24 V relay.\u003c\/p\u003e\n\u003cp\u003eA trimmer potentiometer is provided to set the reference voltage. The reference can be connected to either the inverting or non-inverting input of the comparator using the provided resistor network. Resistors \u003cstrong\u003eR6\u003c\/strong\u003e and \u003cstrong\u003eR12\u003c\/strong\u003e are used to configure the upper and lower threshold reference voltages. Resistor \u003cstrong\u003eR4\u003c\/strong\u003e can be used to introduce hysteresis and prevent relay chatter near the switching threshold.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e5 V DC supply operation\u003c\/li\u003e\n\u003cli\u003eRelay output contact Rating 10A\u003c\/li\u003e\n\u003cli\u003eTrimmer potentiometer for reference voltage adjustment\u003c\/li\u003e\n\u003cli\u003eOn-board Relay status LED\u003c\/li\u003e\n\u003cli\u003eOn-board Power LED\u003c\/li\u003e\n\u003cli\u003eScrew terminals for relay connections\u003c\/li\u003e\n\u003cli\u003eHeader connector for power input\u003c\/li\u003e\n\u003cli\u003eHeader connector for sensor or input signal\u003c\/li\u003e\n\u003cli\u003e4 x 4 mm Mounting Holes\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 47.47 x 29.21 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47247548317868,"sku":"B148","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/B148.jpg?v=1789820590","url":"https:\/\/dotfry.com\/products\/comparator-relay-board-using-lmv331","provider":"dotfry","version":"1.0","type":"link"}