The internal FET switch array controls the charging and discharging of the fast capacitor in a certain way, so that the input voltage is doubled or reduced by a certain factor (0.5, 2 or 3), so as to obtain the desired output voltage. This particular toneThe process guarantees up to 80% efficiency and requires only external ceramic capacitors. Since the circuit is switched, the charge pump structure will also produce a certain output ripple and EMI (electromagnetic interference). This is just a reference.
In electrical equipment and wireless circuits, [2] transformers are commonly used for lifting voltage, matching impedance, safety isolation, etc. In the generator, whether the coil moves through the magnetic field or the magnetic field moves through the fixed coil, the potential can be induced in the coil, in both cases, the value of the magnetic flux is unchanged, but the number of magnetic flux intersecting the chain with the coil is changed, which is the principle of mutual induction. transformerThe device is a device that uses electromagnetic mutual inductance to transform voltage, current and impedance.
The relay draws, the oscillation circuit in the booster circuit works, so that a high voltage of about 1000V~1500V is generated on L3, and then the output is rectified by VDVD2, killing the mouse (VDVD4 acts as an isolation function to prevent the high voltage from damaging the components in the control circuit), and the louder and the light-emitting diode LED1~LED3 are also connected.
Of course, the working level of wireless charging is relatively high, and even the role of energy transfer can be achieved between the iron core and the direct coil can be abandoned. The drawings are hereA lot, but will not send pictures, tell you about the simplest wireless charge.
In this regard, Wang Teng, product director of Xiaomi company, wrote on Weibo this afternoon that 30W super wireless flash charge is a leading solution developed by Xiaomi, which contains a number of innovative technologies: efficient direct charge architecture: circuit architecture design, device selection, protection design, etc., is completely self-developed by Xiaomi. Charge turbo 0 technology: 4:1 direct charge algorithm, chargeElectric strategy, protection algorithm, etc. are self-developed by millet.
Mi 9pro uses a universal charging combination, that is, it supports four charging forms of wired fast charge, wireless flash charge, wired OTG backcharge and wireless backcharge, which can be charged at any time, readily and arbitrarily. The wireless flash charge power can reach 30W. According to Wang Teng, product director of Xiaomi Company, the Xiaomi 30W wireless flash charging system contains a number of innovative technologies: efficient direct charging architecture: circuit architecture design, device selection, protection design, etc. are completely self-developed by Xiaomi.
Screen of the Mi 13 compared to the Redmi k60proThe screen is larger, and the resolution and touch sampling rate are higher, the quality of the screen will be better than the Mi 13, but the Mi 13 is much thinner than the Redmi k60pro.
Mi 10 supports 30W wired fast charge, 30W wireless flash charge and 10W fast wireless backcharge. Xiaomi 10 is equipped with a 4780mAh large-capacity battery, using Xiaomi 30W wired fast charge, you can fully charge the battery in about 56 minutes, using Xiaomi 30W non-flash fast charge, you can fully charge the battery in about 69 minutes. The Mi 10 supports 30W wired fast charge, 30W wireless flash charge and 10WWhen the voltage is changed to 5V, how to change... '> Existing wireless charger made with NE555, when 12V input, the voltage is modified to 5V, how to modify...
I don't know if I misunderstood your meaning or you expressed it wrong, the right side of your transformer is called primary, according to your description, the primary is more than the number of secondary rings, VCC should be lower than VDD, this circuit is not necessary.