Electronics 01
How to Read SMD Resistor Codes (EIA-96 Explained)
103 is 10 kΩ, 1002 is 10 kΩ and 01C is 10 kΩ too. How three-digit, four-digit, R notation and EIA-96 codes on chip resistors work, with the full table.
electronics basics
Electronics 02
Inverting vs Non-Inverting Amplifier: Gain and Examples
Inverting gain is −Rf/Rin, non-inverting is 1 + Rf/Rg. Where both formulas come from, worked examples with standard resistors, clipping and bandwidth.
Electronics 03
LM317 Formula Explained, With Worked Examples
Vout = 1.25(1 + R2/R1) + Iadj R2. Where the LM317 formula comes from, how to pick R1 and R2, why it needs 3 V of headroom and when it needs a heat sink.
Electronics 04
What Does 104 Mean on a Capacitor? Codes Explained
104 on a capacitor means 100,000 pF, which is 100 nF or 0.1 µF. How to read the three-digit code, tolerance letters, voltage codes and X7R or C0G.
Electronics 05
Why 3 dB Is Double the Power (and 6 dB Double the Voltage)
3 dB is double the power because 10 log 2 = 3.01. Why voltage needs 20 log, why two 80 dB speakers make 83 dB, and how dBm, dBu and distance work.