Electronic sound control circuit (applause)
This electronic sound control circuit works like a sound activated relay and can activate or deactivate a device connected to it, by two consecutive claps.
Mar 242020
Mar 222020
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.
Mar 122020
What is a PUT?
PUT – Programmable Unijunction Transistor. Main characteristics. PUT and UJT. Oscillator circuit design and waveforms. Frequency formula
Mar 102020
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.
Mar 062020
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
Mar 042020
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
Feb 242020
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.
Feb 202020
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.
Feb 182020
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.
Feb 152020
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.
Feb 132020
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.
Feb 132020
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