Basic Simple Mini Am Radio Earphone 3vdc Student Elect Circuit Board Un Assembl

US $1300

Bangkapi, BA, Thailand
Jun 20th

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FK710 SIMPLE MINI AM RADIO+EARPHONE 3VDC,STUDENT ELECTRONIC CIRCUIT BOARD, UN-ASSEMBLED KIT The Simple AM radio circuit is a saving circuit that requires few components and suitable for educational used. This tiny, economical AM radio utilizes a single IC to carry out the tuning, detection and AF output functions. FK710 construction time and size is reduced to a minimum. This AM recriver is ideal as a class project and may be used with its supplied earphones or with audio amplifiers form the Future Kit series. Technical data - Power supply : 3VDC. - IC board consumption : 45mA. max. - PCB dimensions : 1.71 x 1.18 in. Note : No attenna / Battery / Battery holder / Battery connector in the package. How does it work This circuit is shown in Figure 2. The IC1 and OSC coils can turn in any on-air frequency deteced by antenna (at ANT point). The TR1 and TR2 will amplify the output of IC1 which fed to them via C4. This amplified signal can be neard by using a dynamic heard by usingm dynamic headphone or small speaker (not morethen 300 Ohms of internal resistance). The small electrical wire with the length of 20-30 cm. Can be used as an connecting it ti the pint ANT. Circuit Assembly The assembly of components is shown in Fig. 2. For good looking and easy assembly, the shorter components should be first installed - starting with low resistant components and then the higher. An important thing is that diodes, electrolyte capacitors, and transistors shall be carefully assembled before mounting them onto their right anode/cathode of the IC board otherwise it might cause damage to the components or the circuit. Configuration of the anode and the cathode is shown in Fig 3. Use the soldering iron/gun not exceeding 40 watts and the solder of tin-lead 60:40 with flux within. Recheck the correctness of installation after soldering. In case of wrong position, just use lead absorber or lead extractor wire to avoid probable damage to the IC. ANT point connects with antenna by using 20-50 cm. length small electrical wire as an antenna. Testing Connecting the circuit according to the figure 2. You will hear a sound from head phone. Tunning coil OSC to find out station. ANT point is for connecting to the antenna. Free Shipping Handling WORLDWIDE. The package will be shipped directly from Thailand via Economy/Standard Small package Airmail, and it will take about 11-23 Business Days (or about 2-5 Weeks) **Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. **Please check with your country’s customs office to determine what these additional costs will be prior to bidding / buying Return Policy 100% Satisfaction Guarantee: If you are not satisfied with the product you purchased for any reason, please contact us for a return instruction within 30 days Shipping Handling costs are not refundable. Return shipping cost will be paid by buyer. We accept ONLY PayPal for payment. Contact us Please contact us by eBay message only.