Category Archives: The Signal Path

TSP #5 – Op-Amps, PWM and Ignition Coils Tutorial (Part 2/3)

In this episode (Part 2/3) Shahriar discusses methods for generating a pulse-width-modulated (PWM) signal entirely in the analog domain by employing operational-amplifiers (Op-Amps). A total of four op-amps from a single power supply are used in unity-gain negative feedback, astable positive feedback, integrator and open-loop comparator configurations. The theory of Continue reading TSP #5 – Op-Amps, PWM and Ignition Coils Tutorial (Part 2/3)

TSP #5 – Op-Amps, PWM and Ignition Coils Tutorial (Part 1/3)

In this episode (Part 1/3) Shahriar discusses methods for generating a pulse-width-modulated (PWM) signal entirely in the analog domain by employing operational-amplifiers (Op-Amps). A total of four op-amps from a single power supply are used in unity-gain negative feedback, astable positive feedback, integrator and open-loop comparator configurations. The theory of Continue reading TSP #5 – Op-Amps, PWM and Ignition Coils Tutorial (Part 1/3)

TSP #4 – Frequency Generation: Crystals and Ring Oscillators (Part 4/4)

In this episode (Part 4/4) Shahriar takes a look at the challenges associated with signal generation for the purposes of timekeeping. More specifically he digs deep into the workings of crystal oscillators and even takes apart some vintage crystals to reveal whats inside! He also shows how this type of Continue reading TSP #4 – Frequency Generation: Crystals and Ring Oscillators (Part 4/4)

TSP #4 – Frequency Generation: Crystals and Ring Oscillators (Part 3/4)

In this episode (Part 3/4) Shahriar takes a look at the challenges associated with signal generation for the purposes of timekeeping. More specifically he digs deep into the workings of crystal oscillators and even takes apart some vintage crystals to reveal whats inside! He also shows how this type of Continue reading TSP #4 – Frequency Generation: Crystals and Ring Oscillators (Part 3/4)

TSP #4 – Frequency Generation: Crystals and Ring Oscillators (Part 2/4)

In this episode (Part 2/4) Shahriar takes a look at the challenges associated with signal generation for the purposes of timekeeping. More specifically he digs deep into the workings of crystal oscillators and even takes apart some vintage crystals to reveal whats inside! He also shows how this type of Continue reading TSP #4 – Frequency Generation: Crystals and Ring Oscillators (Part 2/4)

TSP #4 – Frequency Generation: Crystals and Ring Oscillators (Part 1/4)

In this episode (Part 1/4) Shahriar takes a look at the challenges associated with signal generation for the purposes of timekeeping. More specifically he digs deep into the workings of crystal oscillators and even takes apart some vintage crystals to reveal whats inside! He also shows how this type of Continue reading TSP #4 – Frequency Generation: Crystals and Ring Oscillators (Part 1/4)

TSP #3 – Camera Flash Circuit and Nixie Tube Tutorial (Part 3/3)

In this episode (Part 3/3) Shahriar explores the principle operation of a camera flash circuit. The flash circuit is analyzed at the schematic level and through measurements. He then moves on to power a nixie tube using this circuit and calculates the efficiency of the DC-DC converter for this type Continue reading TSP #3 – Camera Flash Circuit and Nixie Tube Tutorial (Part 3/3)

TSP #3 – Camera Flash Circuit and Nixie Tube Tutorial (Part 2/3)

In this episode (Part 2/3) Shahriar explores the principle operation of a camera flash circuit. The flash circuit is analyzed at the schematic level and through measurements. He then moves on to power a nixie tube using this circuit and calculates the efficiency of the DC-DC converter for this type Continue reading TSP #3 – Camera Flash Circuit and Nixie Tube Tutorial (Part 2/3)

TSP #3 – Camera Flash Circuit and Nixie Tube Tutorial (Part 1/3)

In this episode (Part 1/3) Shahriar explores the principle operation of a camera flash circuit. The flash circuit is analyzed at the schematic level and through measurements. He then moves on to power a nixie tube using this circuit and calculates the efficiency of the DC-DC converter for this type Continue reading TSP #3 – Camera Flash Circuit and Nixie Tube Tutorial (Part 1/3)

TSP #2 – Saleae Logic and Logic16 Product Teardown

In this episode Shahriar takes a look inside the “Logic”, “Logic16” and USBee SX which were reviewed in the previous episode. The PCBs get a closeup inspection along with some insight into the design of these products. How do they compare? Well, you’ll have to watch the video to find Continue reading TSP #2 – Saleae Logic and Logic16 Product Teardown