Building a smart battery charger circuit with a single transistor

    The automatic battery charger circuit design in this paper uses a circuit that can be called the simplest window comparator ever made with a single transistor (see figure). It begins to charge when the voltage drops below a predetermined value, and it stops charging when the voltage exceeds a predetermined value.

    The voltage can be set up and down with a precise variable voltage supply. Normally connected relay leads are not connected to the 15V dc supply, which prevents voltage from being passed to the battery leads. This allows the upper and lower voltages to be accurately set. However, a 15 V dc charging source is connected to the circuit.

    First, the variable voltage power supply is fixed at 13.3 V dc-- voltage of the battery which is fully charged, the battery and is connected to the connection point of the circuit. The slider of the VR1 is adjusted to the top of the positive pole of the battery . The slider of the VR2 should be adjusted to the end connected to the VR1. The transistor starts to work and shunts VR1. Then, the slider of VR1 is adjusted to the other end, that is, to one end of VR2.

    Now set the test supply voltage to 11.8 V dc, which is the voltage when the battery is depleted. Then, adjust VR2 so that it stops the transistor from working. The test voltage is then increased to 13.3 V dc and VR1 is adjusted to operate the transistor. With the set up and down voltage, the NC point is connected to the circuit (15V dc charging voltage). The battery charger is now ready.

    Skin Pack Vacuum Machine

    This is our skin pack vacuum machine, which can be used to pack meat, fish, seafood, cooked food, etc.

    Configuration

    1. 304 stainless steel body and housing.

    2. High quality aluminum 6061 anodized.

    3. Vacuum pump.

    4. Teflon sealing hot plate.

    5. Omron temperature controller.

    6. Schneider and Chint electric switches.

    Technical features

    1. One press is enough and the operation is simple.

    2. No special mold is required, and the general profile is high.

    3. Imported temperature control, energy saving and low consumption.

    4. Corrosion resistance, no mucous membrane and easy to clean.

    5. The pressure is adjustable and the vacuum effect is good.

    Skin Pack Vacuum Machine,Skin Packaging Machine For Food,Vacuum Skin Pack Machine,Multivac Skin Pack Machine

    Hangzhou Jingyi E-commerce Co.,Ltd , https://www.jypackmfg.com

    Previous Post: The development of grain drying equipment in China is far from adapting to the needs of grain production development
    Next Post: Passive digital infrared sensors can be self-powered adjustment
    Home
    Recent Posts
    • Explosive meter features use and precautions
    • China launches a new round of subsidies for new …
    • Analysis of Root Water Absorption of Apple Tree …
    • Hot Rims Chrome Wheel Spray Cleaner
    • 50 tons Enpac hydraulic cylinder-100t Enpac hydr…
    • Dandong supports and guides enterprises to adapt…
    • It is difficult for domestic small and medium co…
    • Long-term valve maintenance and assembly require…
    • Stainless Steel Lab Equipment Test Machine Vibra…
    • Improvement of Taiping Molybdenum Process
    • Ninghai mold industry output value increased by …
    • Apple iTunes Radio Music Stream is Expected to C…
    • bathroom Weight Scale Personal Spring Scale
    • Guangxi Yuchai Heavy Machinery Product Focused o…
    • Interview with Alessand Koda Marketing Manager S…
    • What is the difference between sprinkler oil bra…
    • When hanging the bucket garbage truck in the slo…
    • Taihong 55HP Agriculture Tractor
    • Light Incubator Design Features
    • Wrecker operation