Tag Archives: transistor

One Transistor Radio

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Here is a simple circuit for a one transistor Audion type radio powered by a 1.5 V battery. It employs a set of standard low-impedance headphones with the headphone socket wired so that the two sides are connected in series thus giving an impedance of 64 Ω. The supply to… Read more »

Transistorised Code Lock With Torch

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This electronic lock for domestic use opens only when you connect the right combination of five switches. There are twelve switches in total. If you connect a wrong combination, the lock remains closed. At night, flip switch S3 to ‘on’ position in order to enable the torch. In the daytime,… Read more »

Mains Manager

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Very often we forget to switch off the peripherals like monitor, scanner, and printer while switching off our PC. The problem is that there are separate power switches to turn the peripherals off. Normally, the peripherals are connected to a single of those four-way trailing sockets that are plugged into… Read more »

SiC Bipolar Junction Transistors for Improving Hybrid Car Cooling System

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Since Silicon Carbide (SiC) transistors can stand on higher temperatures, it is possible to use those devices into the standard internal combustion engine (ICE) water cooling system of a hybrid car which needs to be separated from the main cooling system. The article below shows that SiC bipolar junction transistors… Read more »

Practical Circuit Design Technique in Boosting Current Limit of CLDs by Using Transistor Current Gain

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If you find that such an impractical way by just adding the Current Limiting Diodes (CLD) to obtain high current level, the following article may help you regarding the informations within. This article will describe you with a simplified description of practical circuit design technique in boosting current limit by… Read more »