Push – Pull Amplifier
A Push – Pull amplifier is called that way, because it uses 2 groups of transistors and only one works at a time. One group pushes in one direction while the other pulls in another direction. Each group is responsible for amplifying a single phase of the input wave.
What is a PUT?
PUT – Programmable Unijunction Transistor. Main characteristics. PUT and UJT. Oscillator circuit design and waveforms. Frequency formula
Twilight switch circuit with Op. Amp.and LDR
This Twilight switch circuit activates a light, a lamp, a motor, etc., at the time of sunset and performs the reverse process at dawn.
This is an ideal circuit for activating a security light that must be on all night.
Why is the transformer core made of metal sheets?
Explanation of why the electric transformer has a core made of iron sheets. Eddy or Foucault’s currents
400 watts Stereo Amplifier Circuit using STK4050
This 400 watts stereo amplifier circuit uses the Sanyo STK4050 hybrid IC, a high quality low noise amplifier. Its maximum output power is 200W per channel
Electronic Music Metronome circuit using a 555 timer
This Electronic Music Metronome circuit, allows those persons who study or are music fans, to keep the timing, quite accurately.
Power failure alarm using transformer and relay
This power failure alarm circuit is very simple and is very useful when used with electric ovens, a refrigeration systems or to prevent a thief from cutting off the electrical power because it immediately warns of the problem. It also serves you when the fuses have blown.
This 12v battery charger circuit using a LM350 and LM301A op-amp.
This 12v battery charger circuit allows you to charge a 12-volt car battery using a LM350 voltage regulator and a LM301A operational amplifier.
With this sound activated flash circuit, you can achieve incredible pictures of the most unexpected moments.
Pictures like a water balloon that just burst and the water still floats in the air, or when an object of any type explodes.
How to Protect the 500mA Fuse of a Multimeter?
It is very important to protect the 500mA fuse of a Multimeter due to the high frequency that these are burned.
Water level alarm with three transistors
Water level alarm. Simple & small alarm with few components. Has small current demand, it can work with a 9V battery for a long time
Capacitor charging process
Capacitor charging process shows the variation of voltage and current in the capacitor over time, when it is connected to a DC voltage source