18650 rechargeable battery lithium 3.7v 3500mah
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polymer lithium battery Primary battery Rechargeable Battery LR03 alkaline battery
18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah
polymer lithium battery

Primary battery

Rechargeable Battery

LR03 alkaline battery

18650 li ion rechargeable battery

release time:2024-04-08 Hits:     Popular:AG11 battery

  Circuit analysis: CD4047 inverter power supply circuit design

  This circuit consists of a gated astable multivibrator that can be used as a forward/reverse edge-triggered monostable multivibrator with retriggering and external counting options. The chip field effect transistor realizes the power amplification function.

  This circuit consists of a gated astable multivibrator that can be used as a forward/reverse edge-triggered monostable multivibrator with retriggering and external counting options. The chip field effect transistor realizes the power amplification function.

  Turn on the power switch Sl, and when the power grid is working normally, the AC 220V voltage is reduced to the AC 12V voltage through Tl, and then rectified by VD1~VD4 and filtered by Cl, then the battery GB is charged. At the same time, LED1 lights up, indicating that the inverter is charging.

  When an abnormality in the power grid causes a power outage, the DC +12V voltage at both ends of the battery GB provides working voltage for VT1 and VT2 through the primary winding of T2. After turning on the inverter button S2, the +12V voltage provides the working voltage for CD4047 through VD5, S2 and R3, and at the same time, LED2 lights up, indicating that the inverter is in the inverter state. After the multivibrator oscillates, two low-frequency oscillation signals of about 50Hz with opposite phases and equal amplitudes are output from the ⑩ and (11) pins of CD4047. The signals are amplified by the power of VT1 and VT2 (VT1 and VT2 are alternately turned on). , an AC 220V voltage is generated at both ends of the secondary group of T2 to supply power to low-power electrical equipment.

  This inverter power supply has a simple circuit and few peripheral components. After being installed on the whole machine, it can be powered on and work normally without debugging. This device is generally used as a backup power supply. When the power grid supplies normal power, the inverter button S2 should be in the open state; otherwise, S2 should be in the closed state. If you want to increase the output power of the inverter, you can increase the capacity of GB and the power of Tl and T2, and use double-tube parallel connection of field-effect transistors.

  When powered on, adjusting the resistance of RP can change the operating frequency of the inverter output voltage.


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