1, as long as the light cat working voltage is 5v, it will not be broken, mobile phone with a charging bank can be damaged, how to use the light cat will not be broken, in fact, the use of such a scheme (equipment working voltage 5v, 9v, 12v) in the school power outage use, is not uncommon. It is recommended to use a high-power booster and a large-capacity lithium battery separately, so that the voltage is used independently.
2, without a little electrical knowledge, you need to find someone who knows what to do. If the positive and negative poles are wrong, it could damage the light cat.
3, light cat with mobile power network as good. The use of light cat has nothing to do with what the power supply is, as long as the power supply is sufficient, it can be used. Now the light cat power supply is very small. About a few tenths of an ampere is enough.
4, low efficiency. The 20000mAh charging treasure is equivalent to 76Wh, the light cat consumes about 10W, the charging treasure converts 5V and then converts to the light cat voltage, the efficiency is 70%, and it can be used for 5 hours.
1, mobile phone charging booster circuit principle Mobile phone charging booster circuit is a circuit, it can convert low voltage into high voltage to meet the needs of mobile phone charging. Its principle is: the low voltage is input into a transformer, the transformer converts the low voltage into a high voltage, and then the high voltage is output to the phone charger, and finally the high voltage is converted into the voltage required by the phone.
2, booster circuit principle Booster circuit, also known as boost circuit, is a circuit in power electronics. Its main function is to convert low voltage to high voltage. This is done by passing an inductor (usually aAn inductor) and a thyristor (usually a MOSFET or BJT) to achieve. The inductor converts the low frequency current into high frequency voltage through the principle of magnetic induction, while the thyristor controls the output voltage.
3, lithium ion lithium battery standard voltage 4V, charging voltage 5 V 2A the reason is that there is a 4V booster circuit in the charging line. The standard voltage of lithium battery is 4V, which means that two groups of 7V lithium battery units are connected in series, and the full voltage of this battery is generally 4V, so the charging voltage must be greater than 4V to fill the battery.
4, no circuit, it is estimated that you installed transformerStream easy charger. 12V battery full voltage of about 14V, 12V transformer half-wave rectifier output peak voltage is about 12*414-0.7=127V, bridge rectifier minus 0.7V is about 15V, theoretical calculation can be full.
1, the first wired charging, this charging method extends with the development of science and technologyFlash charge, fast charge, the result is to help users quickly full mobile phone battery.
2, wireless charging than wired charging more damage to the battery. As long as it is charged, it will cause damage to the battery, but wireless charging and wired charging are compared, wireless charging will cause more damage to the battery, because wireless charging will generate more heat, and the heat generated will cause more damage to the battery. Whether the line charge charges the battery is controlled by the internal circuit of the mobile phone, and the initial voltage for the normal operation of the internal control circuit of the mobile phone is provided by the battery.
3, In fact, we all know that onlyIf charging will cause damage to the battery, but wireless charging and wired charging are compared, wireless charging will cause more damage to the battery, because wireless charging will generate more heat, and the heat generated will cause more damage to the battery. Whether the line charge charges the battery is controlled by the internal circuit of the mobile phone, and the initial voltage for the normal operation of the internal control circuit of the mobile phone is provided by the battery.
4, wireless charging damage battery: wireless charging in addition to the charge can not be directly supplied to the hardware, other aspects have no impact. You said that the damage battery is wireless charging while playing will be far more than wired damagePool, because the wired power supply does not use battery electricity, wireless is charged while discharging. Long-term use of radio charging will not affect the phone battery.
The principle of counter-charging is: the battery output charge drives the motor to rotate (converts electrical energy into mechanical energy) when the motor drives the bearing to rotate, it also drives a coil to rotate in a magnetic field to generate electric charge (converts mechanical energy into electrical energy) to charge the battery.
Here, the step-down transformer is used as an example: forward power supply is through the high voltage side of the transformerLow voltage side power supply wireless charging boost signal , and "reverse charging" is through the low voltage side of the transformer high voltage side power supply.
Charging from the power supply into the mobile phone is called forward charging expansion knowledge The so-called "reverse charging" is when the mobile phone is connected to other devices, switch to the mobile power supply for discharge, for other electronic devices to charge the process, this time the mobile phone also incarnation charging treasure wireless charging boost signal . When a phone with reverse charging detects an OTG device that supports data exchange between devicesAt this time, the phone outputs voltage to the VBUS on the USB data cable, and will prompt reverse charging.
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 special modulation 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 amountThe output ripple and EMI (Electromagnetic interference). This is just a reference.
Capacitor volume distinction. The volume of the built-in coil of the washing machine capacitor power supply is relatively large, resulting in a large capacitor volume, and the volume of the capacitor without the built-in coil is much smaller, so the capacitor volume of the washing machine capacitor is divided into coils and wireless rings.
DF receiving module operating voltage is 5 volts, static current 4 mA, it is a super regenerative receiving circuit, receiving sensitivity is -105dbm, receiving antenna is best 25 ~ 30 cm wire, it is best to be erected.
Principle benefitThe energy is transmitted to the electrical device, which uses the received energy to charge the battery and at the same time for its own operation.
Wireless charging means providing electrical power to electronic devices wirelessly. Wireless charging is a modern technology that does not require a traditional physical cable connection to charge electronic devices. The basic principle is to use electromagnetic induction or radio waves to transmit energy. This technology uses a charging dock or charger to wirelessly sense the device to transfer power. There are many ways to implement the specific principles and technologies of wireless charging.