Lm358 9v/12v Dc Accumulator Low-voltage/undervoltage Protection Diy Kit

US $140

Shenzhen, China
May 25th

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Click to Enlarge Click to Enlarge Click to Enlarge Click to Enlarge Product Name: LM358 DIY Kit 9V/12V DC Accumulator Low-Voltage/Undervoltage Protection new More Items In Our Store,Click Here! SKU: 5250 Parsts No. : Package: Brand: Quantity: 1 Features: ?The use of accumulator power causes the output voltage decreases,if the accumulator in low voltage for a long time,it will damaged.This suite can be used of testing 9V/12V accumulator output voltage,when accumulator in low voltage/under voltage,the red indicator lights up and the buzzer calls,which realized sound-light alarm,in order to achieve mastering accumulator discharging status. 1.Principle description This suite has simple circuit and uses the LM358 chip,it used as voltage comparator.The comparison value is setted by potentiometer.When the input voltage is reduced to the setted value,the transistor turned on , LED lights, the buzzer calls. 2.Electrical Characteristics Operating Voltage?9v/12v DC Main chip:LM358 PCB size:32*26.7mm 3.Schematic diagram 4.Mechanical drawing 5.Components 6.Welding note Because of putting the silk print in a wrong place when designing. ?9014? is placed the S8550 transistor(the suite only has S8550 transistor,hasn?t S9014 transistor), the positive and negative of buzzer is as showing : 7.Instructions 1.Wedding the component correctly,"IN+" and "IN-" link to the positive and negative of 8V/10.4V power Adjusting the potentiometer, when LED lights up, the buzzer calls, then stop adjusting potentiometer Using the "IN +" and "IN-" to link with the positive and negative of 9V / 12V power, when the voltage is lower than 8V / 10.4V, LED lights up,the buzzer calls. Any problem, please contact us freely 1) We accept PayPal payment ONLY. inkfrog terapeak inkFrog Analytics