Sajjad Haidar

Sajjad Haidar works in Electronics Division (R&D Scientist), Zaber Technologies, Vancouver agglomeration, Canada. He designs and develops analog, digital and power electronic circuits for advanced research in chemistry and physics.

His area of interest: analog and digital electronics, power electronics, photovoltaics, nonlinear optics, laser tuning.

Areas of interest of the author: Analogue Design Automation Supply Power High Voltage Solar Light

Publications on RadioLocman by the author Sajjad Haidar:

Use a photoelectric-FET optocoupler as a linear voltage-controlled potentiometer
You can use a photoelectric FET as a variable resistor or a potentiometer in combination with a...
Aug 14, 2023
Isolated AC linear power control
Power control using the linear region of an active device, such as a MOSFET, is not an efficient...
Apr 7, 2022
MOSFET-based Joule Thief steps up voltage
A simple blocking oscillator circuit can be used to step up voltage using properties of coil...
Jan 19, 2017
Current Limiter Offers Circuit Protection with Low Voltage Drop
Most common current-limiting implementations have a voltage drop that’s too high for...
Nov 18, 2016
Simple Circuit Overcomes MOSFET Gate-Threshold Voltage Challenge
When a MOSFET or IGBT gate-threshold voltage is higher than the available drive voltage, it's...
Sep 30, 2015
Variable HV power supply employs photovoltaic optocoupler
Power supplies with adjustable DC output ranging from 0 V to 30 V or 60 V are on the market. Above...
Jul 15, 2015
Light-controlled oscillator uses solar cell
Any PN junction diode can be used as a variable capacitor in reverse biased mode, as well as in the...
Apr 17, 2014
An LED's intrinsic capacitance works in a 650-mV LRC circuit
The LED and a discrete inductor form an LC tank circuit You can use the inherent capacitance of...
Nov 30, 2011