The Effect of DC Bias on MLCC Capacitors

This video explores the effect of DC Bias on Class II MLCC Capacitors and why once you’ve deployed a ceramic capacitor in your circuit, the capacitance may not be the same as the specified value. https://www.youtube.com/watch?v=HMNwBKOIGfs SDGEE #066 – MLCC Capacitors Schematic for the Capacitor Tester Above is the schematic…

A DIY SMD Pick and Place Tool for Electronics Assembly

This video describes a DIY Vacuum Pick-up tool for picking and placing parts from an SMD component tape. The basic design for this tool involves using a vacuum pump and a solenoid to control the vacuum to a handpiece under control of a foot pedal. https://www.youtube.com/watch?v=1FnGqH_WkL4 By applying vacuum to…

Acoustic Solutions Hi-Fi Amplifier Repair and Teardown – Error U52, U53

In this video, Steve performs a Hi-Fi Amplifier repair and teardown on an Acoustic Solutions SP101 Hi-Fi Amplifier that displays Error U52 or U53 on the display. The amplifier is unable to store tone and balance settings and doesn’t always respond to changing the volume with the rotary encoder. The…

LCD Monitor Repair and Teardown – BenQ 19″ LCD Monitor

In the following videos, Steve performs an LCD monitor repair on a faulty BenQ 19″ Monitor that would not power up correctly and regularly displayed the ‘Auto Adjust’ message. The Peak Atlas ESR70 meter is used to test suspicious electrolytic capacitors in the power supply. http://www.youtube.com/watch?v=Jgpo406pJzE http://www.youtube.com/watch?v=7HjaKBd9yU8

Designing a Constant Current LED Driver – Part 2

In this video Steve interfaces the DC-DC converter circuit with a Microchip dsPIC33FJ16GS502 microcontroller to create a microcontroller-based constant current LED driver. The dsPIC33FJ16GS502 microcontroller has four analogue comparators which allow expandability to 4 independent constant current channels. http://www.youtube.com/watch?v=Jcble4aiNlw

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