Donkey Learning IT

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-Linux LPIC (Linux Professional Institute) certifications -Cisco® network certifications (CCENT, CCNA, Security, Voice, CCNP) -Labs for certification tracks,...

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Raptoreum profit Intel Xeon E5 vs AMD Ryzen 9 3900 too late for the party

SMPS repair series #11 Basics of Feedback Loop and Control Theory in power supplies

SMPS repair series #10 Temperature compensated Zener diode in linear regulators

460W Switch Mode PSU teardown, detailed overview and repair Cisco 3550 PWR PoE

Article 13 Should I turn on YouTube monetization Your opinion matters

IKEA Ledare 1800lm 22W LED lamp Teardown and overview

AC voltage Part 2 root-mean-square (RMS) value explained in Python

AC vs DC voltage Part 1 RMS Equivalent heating value explained

SMPS repair series #9 Zener diode and power transistor without feedback loop

Electron flow vs. Conventional current Thompson's cathode ray experiment

Switch mode power supply repair #8 Pulse Width Modulation explained (PWM)

Switch mode power supply repair #7 Basics of Pulse Width Modulation (PWM)

Howto repair switch mode power supplies #6 Basics of Linear Regulators and voltage references

Howto repair switch mode power supplies #5 Magnetic core materials, ferrite vs steel

Howto repair switch mode power supplies #4 Inductor in electronic circuits P2

Howto repair switch mode power supplies #3 Inductor in electronic circuits P1

Repair Cisco ASA5505 firewall not powering on video reply to subscriber question

Howto repair switch mode power supplies #2 Stand-by circuit and its functionality

Howto repair switch mode power supplies #1 basics, and block diagram of a PSU

RAID arrays RAID0 striping, mean time between failure, tracks, sectors, onsite and offsite backup

KVM hypervisor install on virtualization server BIOS, VT-x, VT-d, Debian bootable USB

Type 1 bare metal vs Type 2 hosted hypervisors, and the VT-x extension Basics of virtualization

Setting up APC7920 PDU power distribution unit IP address, web management HTTP, HTTPS, SSL, SSH

Building an IKEA table-rack mounted lab for virtualization, CCNA-CCNP studies, and ZFS

Cheap home lab build virtualization server, GNS3 for CCNA-CCNP rack, and ZFS

Building an IKEA Lack Rack on wheels for Cisco CCNA and virtualization home lab

Introduction to RAID arrays, basic concepts, sequential vs. random IO, mechanical vs. SSD drives

Repair of a Cisco 2960G switch with amber LED via RAM chip replacement (FAILdefect)

How to reflow a GPU from start to finish #2 reflow process and testing the repaired card

How to reflow a GPU from start to finish #1 preparing the card for BGA reflow