In this video I look at a single supply inverting amplifier, introducing the idea of bias voltage and coupling capacitors.
In this video I look at how a band pass filter can be made using two passive filters. I also look at a couple of things that need to be considered when designing a passive band pass filter.
In this video I show by way of example how to create a digital circuit solution for a logical problem
In this video I will look at a class of circuits called multivibrators, then at 6:00 an example of a bistable multivibrator, known as flip flops. This introduces truth tables and timing diagrams.
In this video I show how the basic NAND gate is made using complementary mosfet transistors. I introduce truth tables as a method of showing logic states.
In this video I explain how the picofarad capacitor code works, and how to determine a capacitors value from its code.
In this video I briefly cover the ideal characteristics of an op-amp and what it means for circuits involving an op-amp
This lesson looks at how to draw a function block diagram to begin the process of designing a circuit.
In this video I will show how to add and subtract binary numbers (subtracting using the two's complement method) Credits to Issac R for filming and questions
Lesson on 27/4/15 I first cover the different types of multivibrator, and distinguish between them. I then examine the types of flip flops available to use, examining their operation using timing diagrams
in this video I cover what an inductor is, how it behaves as a reactive component and how to calculate the inductive reactance I then look at the combined effect of reactance and resistance, known as impedance, and how this is minimised for a circuit at resonance.
In this video I will show you how to calculate the value of a resistor required to protect an LED from failure by too much current
in this video I will discuss the main differences between analog and digital signals, and how this applies to electronics.
In this video I cover the characteristics of an ideal op-amp. I also cover the effect of adding positive feedback to a comparator circuit.
In this video I demonstrate how an amplifier shows clipping, and how this relates to the power supply voltages.
In this video, I explain how adding negative feedback to an op-amp prevents it from immediately saturating, and how this is used to create an inverting amplifier with predictable gain.
Lesson from In this video I explain how to combine several toggle type flip flops together to make a counter. I show why the counter works, and how to change its operation from counting up to counting down.
In the first part of this video I cover the Boolean operators,and how they can be connected together and converted to a circuit diagram. In the second part of this video (A13:00) I cover the basis of the number systems used in electronics (decimal, binary, hexadecimal, octal)
In this video I will show you how to calculate output voltages and resistances in resistive voltage dividers
In this video I will continue looking at flip flops starting with synchronous (clocked) SR type at 10:10 D type at 12:35 JK type at 18:57 T type (toggle) at 21:35 T types to make a counter at 23:30 how to wire D types to make T types at 24:52 making a counter using D types at 29:12 how to change from up to down counter (or vice versa) at 33:42 synchronous and asynchronous counters at 38:05 a look at pre-packaged counter IC's Credits to Issac R for filming and questions
In this video I introduce the concept of reactance and how to calculate it in capacitors. I introduce frequency selective networks (filters) reactance applies to them.
In this video I will be discussing number systems Starting with decimal Binary at 2:07 How to convert from decimal to binary and back at 3:05 using remainder method then using sum of weights (powers of 2) method at 6:45 An overview of 4 number systems at 11:28 Binary to octal conversion at 12:50 Binary to hexadecimal conversion at 16:20 A quick intro to ASCII code at 18:20 Examples of conversion between number systems at 19:22 Binary Coded Decimal (BCD) at 24:25 and and 7 segment displays at 25:45 credits: videoing and editing: Issac R. Presenter: Charlie P.
theory session on ohmic and non-ohmic conductors ohmic t=0m00 non-ohmic: diodes t=5m30 zener diodes t=11m40 summary t=14m20
In this video I will show the different logic gates symbols, and their respective Boolean statements.
In this video I will show you how to calculate the equivalent resistance of circuits made with resistors in series or parallel.
In this video I will show you how to read the resistor value fro the coloured bands, and discuss some of the things you need to think about when selecting a resistor
Class video from 17/3 In this video, I cover the 4 basic gate types (AND, OR, XOR and NOT), and their associated truth tables and Boolean expressions.
In this video I'll show how to calculate voltage, current and ressitance in simple circuits using Ohm's law
In this video I explain how to determine the equivalent capacitance for several capacitors connected in either series or parallel.
Recorded class from April 1st In this video I cover how to convert from Decimal to Binary, and from Binary to both Octal and hexadecimal number systems. I also cover Binary Coded Decimal (BCD) number system.
In this video I introduce op-amps, covering a few basics: the symbol, the pins and their functions, and the general function of an amplifier I also introduce the first circuit that uses an op-amp: the comparator.