Analog electronic circuit designs In Simple Words

Explore how a resistor creates resistance, drives current from a voltage source, and causes a voltage drop from node A to node B, illustrating basic circuit behavior.

Explain how current follows the path of least resistance, splitting among parallel resistors, and how open and short circuits affect node voltages and current flow.

Define what a node is and how voltage varies between nodes, showing the wire shares the same voltage while a different node has a different potential from the voltage source.

Open circuits stop current flow and keep all nodes at the source voltage, while short circuits create a direct path with no resistance and zero voltage drop.

Visualize an ac voltage source as two circuits with opposing polarities, where current ramps to a maximum in one direction, then reverses and returns to zero, repeating.

Diodes allow current to flow in one direction, acting as a short in forward bias and an open circuit in reverse bias, with high voltage breakdown affecting the load resistor.

Explore how a diode turns an AC source into half-wave rectified output, blocking the negative half and allowing current on the positive half, with a practical LED example.

Explore how a full wave rectifier uses a second diode to provide a complete current path, preventing zero-current half-cycles, and how a capacitor smooths flickering at lower frequencies.

Protect your device by using diodes to clamp high voltages during both halves of the ac cycle, routing current to ground and adding a capacitor for a steadier current.

Learn how capacitors store charge and behave as open circuits under dc and low-frequency sources, while acting as short circuits at high-frequency ac, with charging and polarity effects.

Demonstrates how a capacitor in a full-wave rectifier prevents flickering and protects the device by blocking high voltage and delivering steady current during half cycles.

Discover how diodes and capacitors form a voltage multiplier that charges in cycles to produce higher dc voltage from a small ac input, enabling a dc motor to run.

Explore how a low pass filter passes low frequencies to speaker. A capacitor in parallel with a load resistor blocks high frequencies, while an inductor in series conducts low frequencies.

Explore how a high pass filter uses a capacitor or inductor to pass high frequencies to the speaker while blocking low frequencies, enabling channel selection in radio circuits.

Transistors act as switches, with collector on positive side, source on negative side, and base current turning on; two types close the circuit—one by push, the other by ground.

Explore a latch circuit using two transistors and start/stop switches that turns on with one press and stays on after release, until you press stop; applications include alarms.

Illustrates how an amplifier circuit uses a transistor to convert a small base current into a larger collector current, amplifying current while a voltage divider stabilizes node a.

Explore how an operational amplifier compares two input voltages to generate high, zero, or low output, and learn how to pair it with a transistor for a controlled circuit.

Explore how a controlled circuit uses a transistor, op-amp, and voltage divider. See how the op-amp drives the transistor on or off to regulate load voltage and protect the device.

Finalize the analog circuit by adding two dc voltage sources and a voltage divider to the control circuit, and apply low pass filters to reduce high-frequency noise.