The Magnetic Field. Magnetic Field Lines
Magnets. Charges in motion (electric current) behave like magnets (produce magnetic fields)
Oct 152018
Oct 112018
XOR logic gate
In digital electronics there are special gates. One of them is the XOR logic gate or exclusive OR gate. Equivalent XOR Logic Gate using common logic gates
Oct 102018
Sequential Circuits Using Logic Gates
The main difference between combinational circuits and sequential circuits is that in sequential circuits there is one or more output signals fed back to one or more inputs to obtain a new output.
Oct 102018
Combinational Circuit Using Logic Gates
A combinational circuit is a circuit where the output depends only on the combination of the inputs at the time we are testing the output
Oct 092018
Surge Protection Circuit (Voltage Delay Circuit)
This Surge protection circuit is placed between the DC voltage source and the circuit that you want to power. This circuit delays the voltage given by the power source and allows the voltage to be applied to the circuit or device a few moments later.
Oct 082018
Variable Dummy Load for Power Supply Testing.
How to test a voltage source to know if it is good or not?. What is the percentage regulation?.
Oct 052018
AC motor (AC Electric Motor)
One of the characteristics of an AC motor is the number of rotor poles. This data will automatically give the number of windings that the motor has: # windings = # poles x 2.
Oct 052018
Internal resistance of a voltage source
Voltage sources, whether batteries, generators, etc., are not ideal (perfect). A real voltage source is composed of an ideal voltage source in series with a resistance called internal resistance.
Oct 042018
4-channel audio mixer using LM3900 IC
4 operational amplifiers, some resistors and capacitors to implement an audio mixer with a very simple design.
Oct 032018
Rain alarm circuit using 555
This Rain alarm circuit uses the water property to conduct electricity. To implement the water sensor we use two pieces of metal, which are placed close enough for a drop of water to let current flow between the metal plates
Oct 022018
The Power Supply block Diagram Many electronic circuits need a direct current (DC) voltage source, but what we commonly find are voltage sources of alternating current (AC). In order to achieve a direct current voltage source, the alternating current input must follow a convertion process like the one shown in the chart below. The chart shows the operation of a voltage […]
Oct 012018
12 to 5 volt converter circuit (for cars)
This 12 to 5 volt converter circuit for cars is very useful. It can be used to connect 5-volt electronic devices in a car with a 12v battery. (Automotive lead-acid batteries may have a voltage of up to 13.5 volts).