In this post we’ll study a simple opamp circuit design which can be applied for measuring the beta or the forward current gain of a particular BJT in question. What […]
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Extended Telephone Ring Amplifier/Repeater Circuit
The discussed phone repeater circuit can extend the range of your land line ring sound from the phone such that one is able to make a call heard in another […]
Power Interruption Alarm Circuit for Instant Power Failure Indications
This power interruption alarm circuit will alert you whenever there’s a power failure or an interruption in the mains. In some special conditions it becomes imperative to know whether the […]
0 to 99 Digital Pulse Counter Circuits
The proposed 00-99 digital pulse counter becomes very handy in places where you need to keep the people organized in some specified order. Operating details of the digital counter As […]
Temperature Triggered DC Fan Speed Controller
This fan speed controller works by sensing the temperature of the engine and is accordingly used for the triggering. As the temperature increases so does the speed of the fan […]
How to Drive High Watt LEDs with Arduino
The post explains the method of incorporating high watt LEDs with Arduino through external high voltage supplies. The question was put forth by Mr. Cole. The Circuit Question I stumbled […]