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Comparator

Comparator

Comparator A comparator is a circuit that compares two input voltages or currents and gives output High or Low as per input signal. The Output is a digital form according to the input signal compared with the reference. Basically a comparator is used in electronics to compare the two Analog input signals given on both input terminals and we get […]

Ohm’s Law

Ohm’s Law

Ohm Law What is ohm’s law In the electrical field, Ohm’s law is a very important topic. This law is asked in almost all interviews and as basic fundamentals of electrical engineering for all who related to electrical engineering. This is a very important fundamental law that describes the Relation between Current, Voltage, and Resistance. There are three main quantities […]

Operational amplifier (Op-amp)

Operational amplifier (Op-amp)

Operational Amplifier (op-amp) An operational amplifier or op-amp is basically a multistage, very high gain amplifier having very high input impedance (typically a few Mega ohms) and low output impedance(Less than 100 ohms) and has the capability to amplifying signals of frequency ranging from zero HZ to 1MZ. Opamp is basically a multistage, direct-coupled, negative feedback amplifier that uses voltage […]

PIN diode Working, Structure and Application

PIN diode Working, Structure and Application

PIN diode What is PIN diode A PIN diode is one type of diode in which a wide undoped (pure form),  intrinsic semiconductor region placed between (sandwiched) a P-type and N-type semiconductor region. This intrinsic semiconductor layer has high resistivity. The high resistive layer of the intrinsic region provides the large electric field between the P and N-region. It differs […]

Dark sensor circuit

Dark sensor circuit

LDR darkness circuit diagram  Darkness circuit using the comparator  This circuit uses directly 220v AC.  so careful when testing Note- LDR must keep away from the light of the load bulb for flicker less operation. You can do this using the covering of the side area of LDR using black tape. Components Resistors 10K-1 220Ω-1 510Ω or 470Ω -1 56K-1 […]

AC vs DC

AC vs DC

difference between ac and dc AC vs DC   AC DC 1 AC means alternating current DC means direct current 2 AC current reverses its direction periodically. AC alternates its direction within a circuit over time DC current flows in only one direction. DC does not change across time. 3 The magnitude of the current vary with time AC current […]

What is DIAC

What is DIAC

What is DIAC Diac is a device of the thyristor family. DIAC means Diode Alternating current. Diode + Alternating current. This is a type of diode that works in both reverse and forward bias. This diode work on the complete cycle of AC means this work during a positive half-cycle and also during a negative half cycle of the AC […]

Difference between BJT and JFET

Difference between BJT and JFET

Difference between BJT and JFET Comparison between BJT and JFET   BJT JFET As its name Bipolar junction Transistor, This is a bipolar device. Means Minority and Majority both contribute in current conduction. This is Unipolar device, Means Only Majority or Minority contributes in current conduction. This is a Current controller. This is a Voltage controller. Three terminals named Emitter, […]