Digital implementation (IIR filter) of an op-amp integrator
Laplace analysis
Bilinear (or Tustin) transform
The Laplace transfer function can be …
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BJT at DC
In this post we are going to discuss the DC analysis of Bipolar Junction Transistors (BJT).
BJT’s can work in three modes:
- Cut-off: the …
Fixed point representation
The fixed point representation consists of the representation of decimal numbers using a binary coding scheme that can’t model exactly all …
Transistor implementation of Schmitt trigger
The following circuit is known as a Schmitt trigger, implemented with BJT transistors. The main purpose of a Schmitt trigger is to generate a digital …
Coordinates, orthogonal coordinates and BJT transistors in CircuiTikZ
The LaTeX package CircuiTikZ is an excelent way to draw circuits in a standard and elegant manner. However, it can get quite tricky when you need to …
Simple full-wave bridge rectifier design
Design a full-wave bridge rectifier circuit to deliver 10 V dc with less than 0.1 V (pp) ripple into a load drawing up to 10 mA. Choose the …
Debugging MCP23018 on Ergodox Original keyboard
Basic operation
The left hand side of the keyboard uses a Microchip MCP23018 IC, which is an I/O expander with open drain outputs and it can be …
Charge sharing in series and parallel capacitors
Motivation
Several months ago I started trying to find how charge distribution across different capacitors works and I came up to this thought …
Thevenin's theorem
Introduction
Any two-terminal network whose internal circuitry is made up solely of resistors, current sources and voltage sources can be simplified …
Current source and switched capacitors in parallel
A capacitor is an electronic device able to store electrical energy in an electrical field. Usually, the capacitor is defined in its most simple …