Videos

1403

Operational Amplifier LM324 and super microphone circuit

Afroman goes over the basics of how to use an operational amplifier to amplify tiny voltages, and builds a circuit to listen to very faint sounds with a microphone.

For more information about amplifiers, Google “inverting amplifier” “non-inverting amplifier” “instrumentation amplifier” “class A amplifier” “class B amplifier” “class AB amplifier” and that should give you a lot to chew on.

Get new posts by email:
Follow us on social media
1414

Making double layer PCBs at home – video tutorial

Small tutorial, how to make PCBs at home, using photoresist methode.

1406

Voltage divider video tutorial – Voltages dividers and how to build one

This video shows the basics of voltages dividers and how to build one. Power consumption considerations and equivalent series resistance issues are also discussed.

In electronics, a voltage divider (also known as a potential divider) is a simple linear circuit that produces an output voltage (Vout) that is a fraction of its input voltage (Vin). Voltage division refers to the partitioning of a voltage among the components of the divider.

The formula governing a voltage divider is similar to that for a current divider, but the ratio describing voltage division places the selected impedance in the numerator, unlike current division where it is the unselected components that enter the numerator.

Get new posts by email:
Follow us on social media

1390

Video tutorial Multimeter – how to use a multimeter

Video tutorial Multimeter – how to use a multimeter to measure voltage, current, resistance and continuity

Afroman shows you what to look for in a multimeter, and how to use a multimeter to measure voltage, current, resistance and continuity.

A multimeter or a multitester, also known as a or VOM (Volt-Ohm meter), is an electronic measuring instrument that combines several measurement functions in one unit. A typical multimeter may include features such as the ability to measure voltage, current and resistance. Multimeters may use analog or digital circuits—analog multimeters (AMM) and digital multimeters (often abbreviated DMM or DVOM.) Analog instruments are usually based on a microammeter whose pointer moves over a scale calibration for all the different measurements that can be made; digital instruments usually display digits, but may display a bar of a length proportional to the quantity measured.

Get new posts by email:
Follow us on social media

1386

Video tutorial – Diode Tutorial & How to build an AC to DC power supply

This video covers the basics of diodes, bridge rectifiers, and how to build simple unregulated AC to DC power supplies than can handle a few mA up to several Amps.

Aspect Diode and Symbol
Diode and Symbol

1383

Video tutorial How To Test A Bridge Rectifier With A Digital Multimeter DMM

A Short & Easy Test To Check If A Bridge Rectifiers Shorted or Not!!Hope This Helps Someone Out There.

A bridge rectifier makes use of four diodes in a bridge arrangement to achieve full-wave rectification. This is a widely used configuration, both with individual diodes wired as shown and with single component bridges where the diode bridge is wired internally.

Rectifier bridge Aspect

JLCPCB – Prototype 10 PCBs for $2 (For Any Color)
China’s Largest PCB Prototype Enterprise, 600.000+ Customers & 10.000+ Online Orders Daily
See Why JLCPCB Is So Popular: https://jlcpcb.com

Get new posts by email:
Follow us on social media
1379

How to build the best homemade hdtv antenna – video tutorial

This is how to build a homemade TV antenna so that you can catch FREE HDTV. All you need is some copper wire, screws, washers, a piece of wood and a balum.
How to build the best hdtv antenna - video tutorial

Material list for HDTV homemade Diy Antenna

  •  10 Feet of Copper Wire
  • 6 Washers
  • 6 Wood screws
  •  2-3 foot piece of Wood
  • 1 Balum or Transformer
  • Something that can cut the Wire
  • Drill / Screwdriver
  • Tape Measure
  • Sharpie

Schematics for HDTV homemade Diy Antenna

JLCPCB – Prototype 10 PCBs for $2 (For Any Color)
China’s Largest PCB Prototype Enterprise, 600.000+ Customers & 10.000+ Online Orders Daily
See Why JLCPCB Is So Popular: https://jlcpcb.com

Get new posts by email:
Follow us on social media