2x FA808 VARIABLE DC VOLTAGE REGULATOR 0-30V. 1A.POWER SUPPLY,CIRCUIT BO ASSEMBL, US $26.00 – Picture 0

2x FA808 VARIABLE DC VOLTAGE REGULATOR 0-30V. 1A.POWER SUPPLY,CIRCUIT BO ASSEMBL, US $26.00 – Picture 1

2x FA808 VARIABLE DC VOLTAGE REGULATOR 0-30V. 1A.POWER SUPPLY,CIRCUIT BO ASSEMBL, US $26.00 – Picture 2

2x Fa808 Variable Dc Voltage Regulator 0-30v. 1a.power Supply,circuit Bo Assembl

US $26.00

Bangkapi, BA, Thailand
Jun 9th

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2x FA808 VARIABLE DC VOLTAGE REGULATOR 0-30V. 1A.POWER SUPPLY,CIRCUIT BOARD ASSEMBLED KIT (2 Pcs.) For applications requiring higher voltages the FK808 is an economical and easy-to-build project suitable for hobby, school, laboratory, repair-shop and design departments. The voltage can be continuously varied by the on-board spindle pot making it suitable for building into a case. Technical data - Need transformer : 12-0-12V 1A. - Output voltage range : 1.5-30VDC (adjustable) - Maximum load : 1A. max. - IC board dimension : 2.40 in x1.65 in = AC Input 9V....DC Output = 1.24V to 9.62V = AC Input 12V...DC Output = 1.27V to 14V = AC Input 15V...DC Output = 1.29V to 18.36V = AC Input 18V...DC Output = 1.30V to 22.49V = AC Input 24V...DC Output = 1.32V to 30V You also can apply DC Input to this circuit in case of you already have fix power supply 12Vdc -33Vdc. Detail: • Provide a stabilized dc with variable control 1.5-30Vdc 1A maximum. • Including rectified filter ready connection to 24Vac. • Power supply : 30V. • Recommended housing : FB06 How does it work Connect 24 VAC from transformer with diode to rectify AC to 32VDC as shown in Figure 1. C1 is a filter. TR2 transfers current to output. Bias current is taken from TR1, TR2 bias is taken from R2. When TR1 bias, TR1 will conduct current. The base of TR1 less, output will have less current accordingly. We use TR3 to control voltage divider at the base of TR1 to ground. If we turn volume to maximum, voltage at positive pole of output will transfer to R6 to bias TR3 to conduct current. In this case, the base of TR2 does not have voltage, output will be less also. If we turn volume to negative pole, the base of TR3 will have low voltage, TR3 conduct less current while TR2 conduct more, output will have high voltage. 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 Set voltmeter at range 50VDC. Measure at "OUT" point. Turn volume to 10K, voltmeter should measure about at 1.5-30VDC. Application It is suggested to use at least 1A. Transformer and should connect 12 through switch according to Figure 2. If it is lesser than 12 volts, turn switch to 0. If over 12 volts, switch to 12 to reduce TR2 heat. Should also insert heat ventilating board to TR2 for out which requires over 1A. current. 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	FA808
Model	FA808
Country/Region of Manufacture	Thailand
UPC	Does not apply