2x Fk817 Transformerless Power Supply 6-9-12vdc 50ma,electronic Circuit,un-assem

US $12.00

Bangkapi, BA, Thailand
Jun 9th

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2x FK817 TRANSFORMERLESS POWER SUPPLY 6-9-12VDC 50mA,ELECTRONIC CIRCUIT, UN-ASSEMBLED KIT (2 PCs.) This circuit is a small power supply. It hasn't to use transformer for supply the circuit. This item is UN-Assembled kit which buyer has to put all components on PCB board and do soldering. The FK817 circuit board will be at mains voltage so it is recommended that this unit be installed by experienced electrical trades personel. For applications requiring up to 50mA. FK817 is a low cost, compact and convenient power supply for built-in equipment. It features 3 selectable fixed voltages 6, 9 and 12VDC. Technical data - Power supply : 220-240VAC. - Output voltage : 6, 9, 12VDC (select jumper) - Output current : 50mA max. - IC board dimension : 2.00 in x 1.25 in. How does it work The circuit is used C1 to decrease the voltage 220VAC. This voltage is fed to the bridge rectifier diode D1 to D4 which converts the AC input voltage into a DC level. Capacitor C2 smooths the DC output of the bridge. Zener diode ZD1, ZD2 and ZD3 provide a fixed output voltage. This circuit provides up to 50mA. load current. 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. Testing Remove jumper J1 and J2. Supply the voltage supply 220VAC to "INPUT" point, LED power is lit on. Measure the voltage at "OUT" point which will has the voltage approximate 12 volts. See Figure 3 for setting jumper J1 and J2 Caution: On its voltage connection with 220VAC do not touch any of the components as an electric shock may take place Example of an application - You want to supply the power to small circuit ( some components and one Relay and you want small project , soft . Don't want to use the transformer which is heavy and big size. This is suitable for your project. 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.

Condition:	New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...	Brand	Future Kit
MPN	FK817
Model	FK817
Country/Region of Manufacture	Thailand
UPC	Does not apply