Transistor is used to drive relay to connect AC loads. For efficient working, it is important to connect the relay correctly in NPN and PNP transistors. See the way of connection. Continue reading “How to connect Relay with NPN and PNP transistors”
Sometimes we need higher sound output from Audio based circuits using either Buzzer or Speaker. This simple Transistor based Audio amplifier will give loud sound from the Speaker or Buzzer.
Continue reading “Transistor Amplifier. Simple Design 21”
This section describes the features of Transistors, their working and Pin identification methods.
Continue reading “Familiarize Electronic Components Part II – Transistors”
This simple circuit acts as a warning device whenever the temperature exceeds the preset level in its vicinity. It is an ideal circuit to monitor the heat generating devices like PC, Inverter etc.
Inrush current at power on or power resumption after a power failure is the major cause of data loss and errors in Micro controller based electronic circuits. This circuit gives a time delay of 2 minutes to stabilize the power before the device switches on.