Sinotruk HOWO Radio Player AZ9525780010 MP3
Part Number: AZ9525780010
Name： Radio Player MP3
Specification: HOWO
Truck model: Sinotruk
Place of origin: Jinan China
Type : PORTABLE
Placement Dashboard
Warranty : 6 Months
The working principle of the radio :
The basic working principle of the radio Radio is the radio broadcast radio waves in the audio signal taken out to be amplified, and then restore the sound through the speaker. Specifically speaking: from the antenna (the magnetic bar has the ability to gather the electromagnetic field, and the antenna coil is wrapped around the bar) received by many radio high-frequency signals through the input circuit (parallel resonant circuit with frequency selection) Select the desired radio signal into the base of the inverter stage, at the same time, the local oscillator generates high frequency amplitude wave signal, which is higher than the selected station carrier 465KHz, also sent to the transmitter of the inverter level Two
The basic working principle of the radio
Radio is the radio broadcast radio waves in the audio signal taken out, to be amplified, and then restore the sound through the speaker. Specifically speaking: from the antenna (the magnetic bar has the ability to gather the electromagnetic field, and the antenna coil is wrapped around the bar) received by many radio high-frequency signals through the input circuit (parallel resonant circuit with frequency selection) Select the desired radio signal into the base of the inverter stage, at the same time, the local oscillator generates high frequency amplitude wave signal, which is higher than the selected station carrier 465KHz, also sent to the transmitter of the inverter level , The two through the transistor be knot non-linear transformation, the high frequency amplitude modulation wave carrier into a 465KHz IF modulation wave signal. In this transformation process, only the frequency of the modulated carrier wave has been changed, and the amplitude of the amplitude modulated wave (the modulated signal is the sound) has not changed. The converted intermediate frequency signal is selected by the LC parallel circuit connected to the collector of the frequency conversion stage to select an intermediate frequency amplitude modulation signal with a carrier frequency of 465KHz which is sent to an intermediate frequency amplifier for amplification and then sent to a detector for amplitude detection to recover the audio signal and then pass Low-frequency voltage amplification and power amplification, go to promote the speaker, restore the sound. Super-heterodyne radio is the more popular radio, the block diagram in Figure 1:
It is composed of antenna, input circuit, local oscillator, frequency converter, intermediate frequency amplifier, detector, low frequency voltage amplifier, power amplifier and other components.
QUICK DETAILS :
Size: | Standard | Packing: | Carton Box |
Payment term: | T/T,L/C,Western union | Place: | Jinan,shandong |
Goods Packed by Carton or Wooden box which can be customized according to customer requirements.
Shipping by sea or by air (DHL / FedEX / UPS)
2017 CLIENTS SHOW WALL :
FAQ :
Q1. What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages
before you pay the balance.
Q3. What is your terms of delivery?
A: EXW, FOB, CFR, CIF, DDU.
Q4. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery.
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