Dark/Light Activated Circuit using LDR The dark sensor circuit is very useful to automatically switch ON and OFF any appliance by Detection of Light and Dark. LDR is a photoresistor that is used for the detection of light. When Light intensity is high on LDR, The Resistance through it decreases, and When Light intensity is […]
Dark Sensor Circuit Read More »
3 LED flasher circuit using transistor Here is another type of LED flasher circuit but this circuit is also about the same as my previous led chaser, here is some change in this circuit. This is a Very Easy and beautiful LED chaser that is made using without any ic. only transistors, capacitors and resistors
Easy 3 Channel LED Flasher/Chaser Read More »
12v CFL Inverter circuit for Emergency Light This is a small power inverter circuit that produces 230v ac at the output through the transformer. The circuit is designed by T.Kalpana. This can be used as the emergency CFL lighting, CFL needs AC input for operating and this circuit provides the AC to CFL. This circuit
CFL Driver Inverter Circuit Read More »
12v battery charge level indicator circuit led bar graph The LM3914 is a monolithic integrated circuit that senses analog voltage levels and drives 10 LEDs, providing a linear analog display. This ic is used for Dot and Bar Display. A single pin changes the display from a moving dot to a bar graph. The current
12v Battery Level Indicator With LM3914 ic Read More »
Power Bank for Mobile/Smartphone What is a Power bank When we go away from home then I face a very common problem, which is power backup for mobile phones. During travel, it is a very common problem to get regular power backup. If you’re traveling or out, you won’t have a chance to recharge your device;
Homemade Powerbank using Li-ion 3.7v Battery Read More »
Solid State Relay/ Optocoupler Relay Solid State Relay is a type of switch to activate Load by using without any Mechanical parts. In this there is only semiconductor devices used, no Mechanical coil relay is used to Switching the Connected Load. Triac is used at the place of coil relay to switch ON and OFF.
Solid State Relay With Triac And Optocoupler Read More »
Delay Timer For Switch ON Supply To Any Appliance For Protection Circuit 1 power on delay timer circuit The delay timer is a device that is used to take some duration be]fore switch on the main input supply to any equipment. This is a protection circuit to protect any electrical or electronic equipment and appliance
Delay ON Timer circuit using transistor Read More »
Simple LED Flasher/chaser/Blinker Circuit This circuit is made using 5 NPN transistors, some capacitors and some resistors. 5 LEDs are blinking as shown in this video gif. you can connect more LEDs to this sequence by adding some more transistors. Q1-Q5= BC547 Resistors 1K-5, 22k-5 Capacitor 22uf 25v-6
Simple 5 LED Blinker/Flasher circuit Read More »
2 Led Flasher circuit Simple Blinking Flasher LED circuit This simple led flasher blinker circuit made by using two npn BC547 transistors and some resistors and capacitors. The speed of blinking can be changed by changing the value of capacitors C1 and C2. This led flasher circuit is very easy and simple and there is
Simple 2 LED Blinking Flasher Circuit Read More »
ContentsP-N Junction Diode Diode Function PN junctionForward biasReverse biasDepletion layer-V-I Characteristics of Semiconductor P-N diodeKnee voltageBreakdown voltageDopingReverse Saturation Current• The Width of the Depletion LayerBarrier potential/built-in potentialApplication of p-n junction diodeFAQ(frequently asked questions) P-N Junction Diode A diode is a two-terminal polarised electronic semiconductor device. One terminal is Anode(-) and the other is Cathode(+). The cathode is
Semiconductor P-N Diode | P-N Junction Read More »
LED Flasher/Blinking Circuit diagram Using 555 timer This is a Popular and Simple LED Flasher circuit using one 555 timer ic and some other components. This circuit works on the principle of Astable Mode operation of 555 timer. Which produces a continuous Pulse wave at the output on pin 3. When the pulse signal
Simple LED Flasher Circuit with 555 timer Read More »
What is NOT gate (Inverter) NOT gate logic inverter circuit NOT gate is a Device that gives output always the inverse of the input. NOT gate output is always the complement of its INPUT. NOT gate, also called an INVERTER, which has only one input and only one output. The main function of the inverter
What is NOT gate (Inverter) Read More »
Automatic Temperature controlled DC FAN Controller Circuit We use many electronic gadgets like power Amplifiers, SMPS, Inverters, and AC-DC converters, etc. These gadgets use ICs that generate more heat during operation and required any temperature controller for Cooling to control the heat for protecting the devices. This circuit is ideal to control the cooling fan
Automatic DC FAN controller circuit Read More »
