🔌 Electronics Labs

EL01 · Sem 3 · Network analysisRC charging and the time constantMeasure the time constant τ of an RC circuit from its step response. EL02 · Sem 3 · Network analysisRL transient and inductor currentObserve how an inductor opposes a change of current and find τ = L/R. EL03 · Sem 3 · Network analysisSeries RLC: under-damped ringingSee the natural frequency and damping of a series RLC circuit. EL04 · Sem 3 · Network analysisSeries RLC: critical and over-dampingCompare under-, critical and over-damped step responses of an RLC circuit. EL05 · Sem 4 · Signals & circuitsRC low-pass filter and Bode plotPlot the frequency response of a first-order RC low-pass filter and find its −3 dB corner. EL06 · Sem 4 · Signals & circuitsRC high-pass filterMeasure the response of an RC high-pass filter and its corner frequency. EL07 · Sem 4 · Signals & circuitsSeries RLC band-pass resonanceFind the resonant frequency, bandwidth and Q of a band-pass RLC circuit. EL08 · Sem 3 · Electronic devicesDiode forward characteristicTrace the I–V curve of a silicon diode and find its cut-in voltage. EL09 · Sem 3 · Electronic devicesHalf-wave rectifier with capacitor filterConvert AC to DC with one diode and measure the ripple. EL10 · Sem 3 · Electronic devicesFull-wave bridge rectifierBuild a bridge rectifier and compare its ripple with the half-wave circuit. EL11 · Sem 3 · Electronic devicesZener voltage regulatorHold an output at the Zener voltage while the input changes. EL12 · Sem 3 · Wave shapingDiode clipperLimit a sine wave to a set level with a biased diode. EL13 · Sem 3 · Wave shapingDiode clamper (DC restorer)Shift a waveform up so its negative peak sits at about 0 V. EL14 · Sem 4 · Power suppliesVoltage doublerProduce about twice the input peak voltage with two diodes and two capacitors. EL15 · Sem 4 · Analog circuitsBJT common-emitter amplifierBias an NPN transistor and measure its voltage gain. EL16 · Sem 4 · Analog circuitsTransistor as a switch (LED driver)Use an NPN transistor to switch an LED from a logic signal. EL17 · Sem 4 · Analog circuitsEmitter follower (buffer)Show that an emitter follower has gain ≈ 1 and low output impedance. EL18 · Sem 4 · Linear ICsOp-amp inverting amplifierSet an exact gain of −Rf/Rin with an op-amp. EL19 · Sem 4 · Linear ICsOp-amp non-inverting amplifierBuild a non-inverting amplifier with gain 1 + Rf/Rg. EL20 · Sem 4 · Linear ICsSumming amplifier (audio mixer)Add two signals with an inverting summing amplifier. EL21 · Sem 4 · Linear ICsOp-amp integratorTurn a square wave into a triangle wave with an integrator. EL22 · Sem 4 · Linear ICsOp-amp differentiatorConvert a triangle wave into a square wave by differentiation. EL23 · Sem 5 · Filter designSallen–Key active low-pass filterDesign a second-order Butterworth low-pass filter with one op-amp. EL24 · Sem 5 · Linear ICsComparator with hysteresis (Schmitt trigger)Turn a noisy sine into a clean square wave with a Schmitt trigger. EL25 · Sem 5 · OscillatorsAstable multivibrator (LED flasher)Build a two-transistor oscillator that blinks an LED. EL26 · Sem 6 · Power electronicsBuck (step-down) converterStep 12 V down to about 4.8 V with a switching converter and measure the ripple. EL27 · Sem 6 · Power electronicsBoost (step-up) converterRaise 5 V to a higher voltage with a boost converter. EL28 · Sem 3 · Network analysisVoltage divider and loadingSee how connecting a load changes a voltage divider’s output.