2pcs/lot NE555 Pulse Generator Small Signal Generator Rectangular Wave Frequency Adjustable Duty Cycle<br><br>Product Description<br>NE555 Pulse Generator Small Signal Generator Rectangular Wave Frequency Adjustable Duty Cycle <br>Description:<br>Size: 20mm*40mm<br>Function: to generate different frequency square wave or square wave;<br>Parameters:<br>(1) power supply input voltage: 5V-12VDC. when 5V power supplythe output current is about 10MA; when 12V power supplyoutput current can be left in 30MA Right;<br>(2) frequency: 5 bands (actual value)<br>The J1 file: 0.6Hz ~ 25Hz<br>The J2 file: 7Hz ~ 300Hz<br>The J3 file: 50Hz ~ 2.5kHz<br>J4 block: 350kHz ~ 6.6kHz<br>J5 block: 6.7kHz ~ 180kHz<br>Adjustable duty cycle range: 0.4-0.99<br>(3) the LED output indicator lightlow level LED lighthigh level LED arc<br>LED flashing speed represents the frequency output change; in addition to the jumper can choose different frequency<br>ParagraphRV1 control can adjust the frequencythe regulation of LED flicker can be regarded as adjust and change the corresponding frequency change;<br>(4) the input current: 100MA<br>(5): 4.2V--11.4V output voltage peak (with power supply voltage change.<br>Chemical)<br>(6) calculation formula of the output frequency: T=0.7 (Ra+2Rb) C Ra<br>Rb 0-10K adjustable;<br>(7) the input: VCC connect positive electrode of power supply GND connect negative electrode of power supply output: VCC OUT GND The input voltage and the output are consistentthe purpose is convenient for the user to useand can be follow-up power supply.OUT as frequency signal output.<br> <br> <img src="http://gdetail.image-gmkt.com/030/717423496/2016/4/c8ab6847-19fb-4175-87b4-b6cfc3b818c8.jpg" undefined=""><br>Package Included:<br>2 * NE555 pulse generator<br><br>Packaging Details<br>Unit Type: lot (2 pieces/lot) Package Weight: 0.100kg (0.22lb.) Package Size: 1cm x 1cm x 1cm (0.39in x 0.39in x 0.39in)