{"product_id":"isolated-potentiometer-and-switch-module-using-loc110","title":"Isolated Potentiometer and Switch Module using LOC110","description":"\u003cp\u003eThis is an\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eIsolated Potentiometer Module\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003ethat integrates a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLOC110\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003elinear optocoupler, an isolated DC-DC converter, an onboard 10K linear potentiometer, 2 x tactile switches, 2 x PC817 optocouplers, and supporting circuitry. It is designed for reliable use in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eVFD drives, process control, PLCs, automation systems, and other industrial applications\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewhere isolated analog signals and isolated switch inputs are required.\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003etwo tactile switches\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eare connected through two\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePC817 optocouplers\u003c\/strong\u003e, ensuring isolated operation. By default, outputs\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eC1 and C2 remain high\u003c\/strong\u003e, and transition\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003elow when a switch is pressed\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThanks to the onboard isolated DC-DC converter, the module operates from a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003esingle 5V DC supply\u003c\/strong\u003e, simplifying system integration. With the full rotation of the potentiometer, the output provides a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0–3.3V DC isolated analog signal\u003c\/strong\u003e, fully isolated from the potentiometer input.\u003c\/p\u003e\n\u003cp\u003eAt the core of the design is the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLOC110 linear optocoupler\u003c\/strong\u003e, which provides\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3750V isolation\u003c\/strong\u003e. The MCP6001 op-amp (U2) functions as a closed-loop servomechanism, sensing the photodiode current and driving the optocoupler’s LED to maintain accurate linearity. A second MCP6001 (U3) further conditions the phototransistor output. An onboard\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003epower LED (D1)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eindicates the active input-side supply.\u003c\/p\u003e\n\u003cp\u003eThe LOC110 incorporates an infrared LED optically coupled to two photodiodes. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003efeedback photodiode\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003estabilizes the LED current, compensating for nonlinearity, time drift, and temperature variations, while the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eoutput photodiode\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edelivers a highly linear, isolated analog signal.\u003c\/p\u003e\n\u003cp\u003eThis architecture ensures\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ewide bandwidth, robust input-to-output isolation, and excellent servo linearity\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSingle 5V DC supply operation\u003c\/li\u003e\n\u003cli\u003eOnboard 10K linear Potentiometer\u003c\/li\u003e\n\u003cli\u003eOn Board 2 Tactile Switch\u003c\/li\u003e\n\u003cli\u003eIntegrated isolated DC-DC converter\u003c\/li\u003e\n\u003cli\u003ePower status LED indicator\u003c\/li\u003e\n\u003cli\u003e0–3.3V DC isolated output\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions: 47.15 × 35.08 mm\u003c\/li\u003e\n\u003cli\u003e4 x 3mm PCB Mounting Holes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConnections\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCN2: Pin 1 = 5V DC Input, Pin 2 = Analog Voltage Output 0 to 3.3V DC, Pin 3 = GND\u003c\/li\u003e\n\u003cli\u003eCN3: Pin 1 = Collector 1 with Pullup Normally High, Pin 2 – Emitter Connected to GND, Pin 3 = Collector 2 with Pullup Normally High, Pin 4 – Emitter Connected to GND\u003c\/li\u003e\n\u003cli\u003eR15: Potentiometer\u003c\/li\u003e\n\u003cli\u003eD1: Power LED Input Side\u003c\/li\u003e\n\u003cli\u003eSW1= Switch 1, Output Collector-1 (CN2 Pin2\/C1) goes low when this switch is pressed (Normally High)\u003c\/li\u003e\n\u003cli\u003eSW1= Switch 2, Output Collector-2 (CN2 Pin3\/C2) goes low when this switch is pressed (Normally High)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47171808821420,"sku":"D102","price":42.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/D102A.jpg?v=1789039051","url":"https:\/\/dotfry.com\/products\/isolated-potentiometer-and-switch-module-using-loc110","provider":"dotfry","version":"1.0","type":"link"}