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This is 5V drive IC WS2801 magic RGB Dream Color Series Programmable LED Flexible Strip Lights, 32LEDs per meter, 160LEDs per reel, Full color LED strip light, Digital led flexible strip, Can perform various effects by full color led controller. The WS2801 IC now only has 4 pins, durable and easy for installation. This simpler layout and can be controlled separately to each one lamp, every LED is cuttable. Low working voltage, DC5v, ensure safety in wet condition. The transparent of silicon glue and epoxy resin glue can make the light transmittance reach at least 90%,the bare board can make it up to 100%. our company specialize in designing drive control scheme and developing new product  for led decorative lighting and LED lighting industry, providing all-dimensional solutions.We mainly engaged in designing and selling the led lighting drive IC,LED lighting constant current driving IC,LED lighting control system. Good service,comprehensive pre-sale and after-sale service, also pro...

IC 555 timer tester is a simple circuit that serves to test the condition of IC 555. 555 timer circuit tester, in principle, start the timer 555 in astable multivibrator mode. As an indicator of the status of the timer 555 good condition or damaged to use 2 pieces LED which will light up in a blink alternately when the timer 555 in good condition.  And only one will turn on or off all the timer 555 when the condition is broken. 555 timer circuit tester is powered using 9 Volt DC voltage source. Complete circuit tester 555 as follows. Tester schematic How to use 555 timer tester is in conjuction with IC 555 to test the existing IC socket according to the orderbutton. Then activate the power switch to begin testing the 555 timer ic. Then live we observe the LED indicators 2buah before, whether flashing alternately (good) or not blink or even die all (timer 555 damaged).

IC Timer 555 has a basic PWM controller with pulse width control feature 0 .. 100% which is controlled using the R1, at the time of controlling the oscillator frequency relatively stabi so it may be used to build the Simple PWM controller. Frequency of Simple PWM controller 555 depending on the value of R1 and C1, values ​​shown R1 and C1 will form the output with a frequency of 170 to 200 Hz. Diode-diode used in the Simple PWM controller With this 555 can use a 1N4148. R2, R3 and C3 form a giver triger circuit beginning at the reset IC 555 for 2 seconds. If you want to use a series of Simple PWM controller 555 with the V + not +12 V, it does not matter to raise tilapia R2 where (V + * R2) / (R2 + R3) is about 2, because it limits the signal level reset is 0.5 .. 1V. If you do not do that, then signal the kickstart to get too close to the limit reset signal reception. PWM controller circuit Q output of 555 on the Simple PWM controller circuit 555 is used for driver PWM pulse, so that t...