Electronics reference charts
The tables you look up at the bench, each with what the numbers mean and a free lesson where you use them in a real circuit.
- Standard resistor values chartThe E12, E24 and E96 series, decade by decade, and which one to reach for.
- SMD resistor code chartTurn 472, 4702, 4R7 or 01C on a tiny resistor into ohms.
- LED forward voltage by colourEach colour's forward voltage, and how many LEDs fit in series on 5 V, 9 V or 12 V.
- Electronics unit prefixes and conversionsp, n, µ, m, k, M and G, conversion tables, and what 4k7 or 2n2 means.
- Capacitor code chartTurn 104, 473J or 2A into a value, a tolerance and a voltage rating.
- Common diodes chart1N4148, 1N4007, 1N5819 and the 1N47xx Zeners compared, and which one to use.
- Common transistors chartRatings, gain and pinouts for the BJTs and MOSFETs in every parts kit.
- Logic gate truth tablesAll seven gates' truth tables, how to write each one, and the chip numbers to buy.
- Arduino Uno pins and limitsWhich Uno pin does what, and how much current each pin and the whole board can give.
- Binary, decimal and hex table0 to 15 in all three bases, the powers of two, common bytes, and converting four bits at a time.
- AWG wire gauge chartAWG and mm² side by side, ohms per metre, and roughly how many amps each size takes.
- Battery voltage and capacity chartFull, nominal and flat voltages, typical mAh, and how full a lithium cell is from its voltage.
- Electronics formulas cheat sheetOhm's law to antenna length: every formula in the course, what it gives and where to learn it.
- Electronics glossaryFrom AC to Zener diode: the words of electronics, each in a sentence or two.