{"product_id":"dc-5-28v-4-20ma-led-digital-current-signal-generator-rechargeable-analog-generator-module-with-shell","title":"DC 5-28V 4-20mA LED Digital Current Signal Generator Rechargeable Analog Generator Module With Shell","description":"\u003cp\u003e\u003cspan style=\"font-size:14px;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:16px;\"\u003eFeatures:\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e1. Easy to use, convenient wiring, knob operation, the output signal immediately output after adjusting, no delay.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003e2. Voltage range: the input power is DC 5-28V,  suggested the power supply is\u003cspan style=\"font-size:14px;\"\u003e DC\u003c\/span\u003e 12-24V.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003e3. The protection function is perfect: with the input voltage reverse connection protection, the power reverse connect, the instrument does not work, it will not be damaged by the reverse.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003e4. Standard current output range: 4-20mA current output can be generated by manually adjusting the potentiometer on the product, which is used for the occasion of 4-20ma output of current simulation.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003e5. The current regulation is very stable: the electric current is regulated by the wire-wound potentiometer, and the current is adjusted smoothly, which avoids the faults such as the resistance mutation which is often produced by the ordinary carbon film potentiometer.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003e6. With the current meter, display precision\u003c\/span\u003e\u003cspan style=\"font-size:14px;\"\u003e.\u003cbr\u003e\u003cbr\u003e7. With dial, it can quickly locate and identify the running state of the equipment.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003e8. Fixed current output value: the output current can be automatically and constant at the setting point according to the customer's adjustment, and also can be used as a constant current source, and the current output should be no more than 20MA when used as a constant current source\u003c\/span\u003e\u003cspan style=\"font-size:14px;\"\u003e.\u003cbr\u003e\u003cbr\u003e9. If the test output is normal, use a multimeter(DC current ) to connect the \"current +\" \"current -\"terminals to show whether the values are consistent with the multimeter reading.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003e10. Can be used in signal source generation, valve regulation, frequency converter control, PLC debugging, instrument test, led test, analog transmitter output.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:16px;\"\u003eSpecifications:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003eCurrent: 0-20mA\u003c\/span\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cdiv\u003e\u003cdiv\u003e\n\u003cp\u003e\u003cspan style=\"font-size:14px;\"\u003eSize: 8.5 x 7 x 4.2 cm \/ 3.34 x 2.75 x 1.65 inch\u003c\/span\u003e\u003cbr\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size:16px;\"\u003eThe output impedance matching problem of the current generator:\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003eThe output signal must meet the following requirements\u003c\/span\u003e\u003cspan style=\"font-size:14px;\"\u003e:\u003cbr\u003e\u003cbr\u003eAccording to the formula: I=U\/R (current = voltage divided by resistance)\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003eSo your power voltage divided by your signal internal resistance is the maximum current that your signal receiver can generate.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003eIn addition, our current generator has some internal resistance.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003eSo here's the formula:\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003ePower supply voltage\/(customer's signal resistance + internal resistance of our current generator) = constant current output\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003eSince the power supply of our module is 4-35v, the constant current generated by the module will not be sufficient if the power supply is low and the customer's internal resistance is larger.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003eThe signal matching requirements of our module are given below:\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003ePower supply is 24V,  the signal internal resistance ≤ 1000 Ω\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003ePower supply is 12V,  the signal internal resistance ≤ 500 Ω\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003ePower supply is 5V,  the signal internal resistance ≤ 200 Ω\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003eIf the internal resistance of your signal is higher than the above parameters, it can be used to solve the problem of insufficient current supply of the constant current source by improving the power supply voltage or by reducing the internal resistance of the signal. Note that the supply voltage cannot be increased to more than 28V.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:16px;\"\u003ePackage included:  \u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:14px;\"\u003e1 x 4-20mA current signal generator with shell\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"font-size:14px;\"\u003e\u003cimg alt=\"\" src=\"http:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/12\/50\/f53f3a9d-a770-439b-a9e1-7509b86f5adf.jpg\"\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"http:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/91\/52\/f528d27f-3e11-4f7c-8074-f8dd8ce7aa9f.jpg\"\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"http:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/37\/2A\/5234676f-720d-428e-85f5-7395c2996ad9.jpg\"\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"http:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/C6\/9E\/1849b484-8bd9-489d-829b-dab3d5b3ae06.jpg\"\u003e\u003c\/span\u003e\u003cbr\u003e \u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"\" src=\"http:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/56\/22\/e1558a8f-440c-47f3-b15a-a4d2c882080b.jpg\"\u003e\u003c\/div\u003e","brand":"Shopify","offers":[{"title":"Default Title","offer_id":14009479364652,"sku":"1256723","price":780.86,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2787\/9162\/products\/7a08968c-7846-44b0-80e2-8c5549ab964f.jpg?v=1586961963","url":"https:\/\/electronic-pro-south-africa.myshopify.com\/products\/dc-5-28v-4-20ma-led-digital-current-signal-generator-rechargeable-analog-generator-module-with-shell","provider":"Electronic Pro ","version":"1.0","type":"link"}