Electronics Area – Electrical and Electronics Tutorials and Circuits
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Electrical and Electronics Tutorials and Circuits
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Audio Splitter Circuit Diagram – 1 Input – 4 Outputs
This circuit has a single input and 4 independent outputs, each amplified with an operational amplifier.
Light sensitive alarm using LDR
This alarm activates when the illumination level changes from almost total darkness to a moderately high illumination level. When this happens the alarm is locked and the alarm signal, be it a light or a sound, remains active.
Off-Delay Timer Circuit using 555 IC
This off-delay timer is ideal when we want to schedule the automatic shutdown of a device after a predetermined time, using the well known 555 IC
Metronome circuit with adjustable BPM
This metronome circuit with adjustable BPM, allows those persons who study or are music fans, to keep the timing, quite accurately for a long period of time.
Variable Dummy Load for Power Supply Testing
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?.
Why is the core of a transformer laminated?
Why is the core of a transformer laminated? Why it is not possible to use a solid iron core instead of core-laminated? What is Eddy or Foucault’s currents?
High current pulse generator
High current pulse generator using a 555 timer and a voltage regulator. This circuit can be useful for DC Motor control. Light control, etc.
Diode Tester Circuit using 741
This diode tester circuit checks, if the diode is in good condition and also determines its polarity. To accomplish our goal, we use an 741 operational amplifier (IC1) configured as an oscillator.
What is the Difference between Electricity and Electronics?
The difference between electricity and electronics or the difference of an electric circuit and an electronic circuit, is that in the electronics circuit, a control is exercised over the flow of the electric current.
How to Extend the Voltage Range of an Analog Multimeter?
How to extend the voltage range of an analog Multimeter? In order to extend the voltage range, a resistor is placed in series with the multimeter. Calculation example.
Logic probe circuit using CD4001 IC
Logic probe circuit with CD4001 IC. This circuit is implemented with CMOS IC technology and is recommended for testing circuits using the same technology
Transistor – Zener Voltage regulator circuit
Transistor – Zener diode Voltage regulator circuit. This circuit delivers an output voltage established by the voltage of the zener diode less 0.7 volts