This article gives you a talk about self-made wireless horn, and diy wireless charger production process corresponding knowledge points, I hope to help you, do not forget to collect the site oh. < / p > < h2 > the article directory list: < / h2 > < ul > < li style = 'margin - bottom: 3 px; list-style: none'>1, How to convert the handheld charging horn sold on the street into a battery power supply
1, if your 220 volt audio, transformer secondary voltage is 12 volts, you can change to 12 volt battery power supply. The method is as follows: turn on the sound, find the power transformer secondary, bridge rectifier filter capacitors (two large capacitors), and then on the filter capacitor two solder joints, with red (positive), black (negative) wire welding on the filter capacitor. Finally, the red line is connected to the positive electrode of the battery, and the black line is connected to the negative electrode of the battery.
2, cut off the circuit at the top of the fork, and connect 12 volts direct current from the arrow.
3, Yes,Pull out the positive and negative terminals of the power supply inside the power supply and connect the battery, paying attention to the same output voltage as the 220 power supply.
1, the above is a Bluetooth player board with power amplifier module, suitable for retrofitting passive speakers. Make a hole in the appropriate position of the speaker, come with a panel, and insert it into the speaker. Easy to use, simple wiring. Because the power amplifier is slightly smaller (5 watts digital power amplifier), it is suitable for speakers with higher sensitivity and resistanceResistance is best 4 ohms, so the power can be larger.
2, first go to a treasure spend a few dollars to buy a Bluetooth board (Bluetooth receiver). As shown in Figure: The Bluetooth board is powered by mobile phone battery, and the Bluetooth board and power toggle switch are fixed on the battery with stick glue. As shown in Figure: According to the logo on the Bluetooth board, several power cord heads are welded with electric iron.
3, as long as the old power player has an audio input jack (lotus socket form), you can install a Bluetooth receiver to achieve Bluetooth wireless connection. The method is as follows: First buy a Bluetooth receiver (board), the receiver is shown as follows: for convenience, theThe receiver is powered separately by a rechargeable cell phone battery. Attach the receiver and power switch to the battery with a stick.
4, first go to a treasure to buy a Bluetooth board, as shown in the figure: use an old cell phone battery to supply power to the Bluetooth board, fix the Bluetooth board and switch on the battery with a stick glue, and weld the battery and Bluetooth board connection line with an electric iron. Figure: Use a headphone plug audio cable to connect to the audio input end of the power amplifier.
5, ordinary active speakers to be changed into Bluetooth speakers, you need to install a Bluetooth adapter, also known as Bluetooth receiver. Through this receiver, a Bluetooth message is receivedA case?
Simply connect the signal cable of the headset to the signal interface of the speaker amplifier. Avoid interference Power amplifiers are sensitive to signal input, and ordinary headphone cables may cause buzzing interference. According to the type of power amplifier signal interface, select the appropriate recording wire (shielded wire), and weld the plug. If there is no insulation material, it can be sealed with plastic water bottles and polished smooth. Hands-on ability to use old things new, without spending a penny to achieve creative.
Connection method of wired speaker: First connect the speaker to the power supply through the charger, and then insert the 5mm plug of the speaker into the mobile phone headsetMouth is enough; Tablets need to be connected using a headphone adapter cable. Bluetooth speaker connection method: First turn on the audio Bluetooth switch, and then enter the Settings -- (other networks and connections) -- Bluetooth -- Turn on Bluetooth and search for audio connection.
Method 1: Buy a 5 turn lotus head audio cable, 5 plug into the phone's headphone jack, the lotus head plug into the power amplifier AUX IN (or LINE IN) L/R jack, when using the phone set playback state, power amplifier input select in the AUX input (or LINE input), you can use the power amplifier to play mobile phone playbackAudio now.
Mobile phone to connect the power amplifier sound, you need to buy a line with 5 plugs to turn the lotus head, because the audio output of the mobile phone is not the same as the input port of the power amplifier, to match the special connection line. The connection method of the wired speaker: first connect the speaker to the power supply through the charger, and then insert the 5mm plug of the speaker into the headset port of the mobile phone; Tablets need to be connected using a headphone adapter cable.
On the premise that the mobile phone supports the OTG function, you can use the OTG data cable to connect the mobile phone and the stereo. One is directly from the mobile phone earphone audio output interface, with the mobile phone audio line to lotusFlower plug, connected to the audio input of the speaker. This method is not convenient due to the limitation of the audio cable. The second way is to use the phone's Bluetooth connection. The premise is that the speaker must have Bluetooth reception. First, open our smart phones and click Settings.
Home has a pair of speakers a power amplifier, want to connect the mobile phone, what is a good program? 1 I personally made a lot of speakers and amplifiers, this is only amateur production, also can not speak on what high-end audio, such as the magnifying circuit board of the big color TV saw down, another power amplifier power supply, the use of two wine wooden boxes installed on the left and right channel speakers, the use of shielding line from the headsetJack for signal transmission, very simple.
This is the end of the introduction of self-made wireless charger and diy wireless charger production process, do not know you find the information you need? If you want to know more about this, remember to follow this site. < / p >