In the earlier post I have explained comprehensively about how a unijunction transistor works, in this post I will elucidate a few interesting application circuits using this amazing device called UJT. The example application circuits using UJT which are explained in the article are: 1) Square Wave Pulse Generator The first design below demonstrates a […]
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10 Easy Op-amp Oscillator Circuit Diagrams Explained
In an op amp oscillator circuit, an op amp is configured with a resistor-capacitor feedback loop or a inductor-capacitor feedback loop, which triggers the op amp to go into an oscillating mode, generating a switching ON/OFF pulses from its output pin. The high-gain and wide passband of operational amplifier (op amp) ICs makes it possible […]
10 Best Timer Circuit Diagrams using IC 555
The circuits I have explained here are 10 best small timer circuits using the versatile chip IC 555, which generates predetermined time intervals in response to momentary input triggers. The time intervals can be used for keeping a relay controlled load ON or activated for the desired amount of time and an automatic switch OFF […]
1.5V, 3V, 6V Inverter Circuit Diagram
In this post I have explained a few miniature inverter circuits that can convert 1.5 V to 220 V or 3 V to 220 V or 6 V to 220 V. All the designs employ a single PNP transistor and transformer, connected in the feedback mode for generating the oscillations. 1.5 V to 220 V […]
1.5V to 12V DC Converter Circuit Diagram for LEDs
The post provides interesting information regarding the making of a 1.5V to 12V converter circuit using a couple of transistors and an inexpensive coil. The idea was requested by Mr. Keith. The Circuit Request I found your blog and have searched for an answer to my question but I’m just not finding it…. What I want to do […]
1.5V Power Supply Circuit Diagram for Wall Clock
The post presents a simple transformerless 1.5V DC power supply circuit which can be used for powering wall clocks directly from mains, and also keep a stand by back-up cell fully charged for enabling an uninterrupted operation of the clock even during mains failures. The idea was requested by Cheekin Warning: This circuit is not […]