Description

Store Categories Store Categories eBay Motor Fashion Books, Movies & Music Electronics Collectibles & Art Home & Garden Sporting Goods Toys & Hobbies Business & Industrial Health & Beauty Other Item Description CF210SP is a new type of radio FM, AM two band radio, the FM band using the CD9088 chip, which uses patch element SMT package, the receive frequency range of 76-108HMZ, not only to accept the FM radio, can also receive campus radio and part of the audio signal of the television stations; AM band using direct IC the TA7642, receive frequency range is 525-1605KHZ circuit is simple, assembly success rate, a better selectivity having a little;. amplifier circuit using TD2822 special function ICs having loud. Sound quality is good. Circuit works 1. Frequency Modulation (FM) section CD9088 is a dedicated single-chip FM radio chip, Its simple external circuit, the circuit was built frequently 70KHZ phase locked loop system, selectively implemented by active RC filter, mute circuit can be suppressed non-IF signal and the IF signal is too weak. FM signal input circuit rod antenna C8 / C10 and L1 IC1 11, 12 feet into the mixer circuit, local oscillation circuit uses a variable capacitor CA / L2, etc. vitality can be achieved manually tune. Circuit R2 / C2 to squelch circuit, 3 feet to the audio loop filter capacitor C4. Indirect C13 6,8 feet of the intermediate frequency feedback capacitor, 7 feet is connected to C14 was the low-pass capacitors, between C17 of 8/9 feet is IF coupling capacitor , 10 feet connected to the C12 is a limiting amplifier low-pass capacitors, 13 feet connected to the C6 of the limiter offset voltage capacitors. 2. Amplitude modulation (AM) section AM band using Direct IC TA7642, TA7642 IC has 10 transistors internal composition, its appearance uses encapsulation mode a TO-92,1 feet grounded, 2 feet input , 3 feet output. Audio signal output from 3 feet, through R6 / C18 is coupled to the input of the power amplifier IC TDA2822 the power amplifier, pushing the speaker working. Feedback Payment Shipment About us Feedback We appreciate positive feedback . we always try our best to service our customers . so if you have ant question ,PLEASE DON’T HESITATE TO TELL US, we are always here to offer help . Payment We prefer PayPal .For purchasing multiple items , please contact us for a combined invoice . generally we would like to receive payment thin 48 hours if . Shipment We provide airmail service with good package . The items will be shipped within the nest 2 business days after we received the payment . when you buy multiple items ,your shipping cost will be combined with discount . SHIPPING TIME (weekends/holidays excluded) Country Name Shipping Time Country Name Shipping Time USA/Canada 10 -15d Spanish/Portugue 10-25d East/South Asia 10 -15d France/West Asia 10-25d United Kingdom 10 -20d Italy 10-30d Australia/New Zealand 10 -15d West Asia/Middle East 15-25d Most Country of West/North Europe 10-20d South America and Africa 15-30d East /Middle Europe/Russia 10-25d About us NEW, GOOD QUALITY, ORIGINAL PACKAGE LARGE STORE AND THE LOWEST PRICE NO-QUESTION-REFUND, FOR LARGE QUANTITY ,OFFER BETTER PRICE, ORIGINAL PACKING(TAPE REEL/TUBE/TRAY） We specialize in electronic components . ICs, Capacitors, Diodes, Resistors, LEDs, Transistors, and so on. Especially in Hard To Find Parts . we only sell NEW , ORIGINAL parts . please buy with confidence .We offer NO-QUESTION-REFUND go to my store