The proposed slow-start power supply circuit is specially designed for power amplifiers to ensure that the loudspeaker connected with the amplifier do not generate the loud and unwanted “thump” sound during power switch ON. This also implies that the power supply will safeguard or protect the loudspeaker from the sudden inrush current transient from the […]
Newly Updated Circuit Projects:
Simple Hum Filter Circuit for Amplifiers
The following post discusses a simple hum filter circuit which can be installed between an audio input source and a power amplifier, so that any possible mains hum frequency within the audio signal is blocked and only the clean audio frequency is allowed to go through. Introduction As the name suggests, hum noise is in […]
IC 555 Astable Multivibrator Circuits
The IC 555 astable multivibrator is a configuration where the IC 555 output continuously switches between an ON state and an OFF state at a given frequency, determined by its RC timing components. Since in this configuration, the output of the IC 555 is never in a stable state, it is called an astable multivibrator. […]
LED Strip Light Dimmer Controller Circuit
In this post I have explained a simple IC 555 based PWM controller circuit which may be used for controlling the intensity of a specified LED bank or an 12V LED strip light. The idea was requested by Mr. Rajdeep. Technical Specifications Fantastic blog you have got. I learnt many things from your blog. I […]
How to Build a Rain Sensor Circuit
This is a simple rain sensor circuit which can be built by a school grade student very easily and can be used for displaying its relatively useful feature, probably among his friends or in a science fair exhibition. Using IC 555 as the Comparator The circuit is basically rigged using IC 555 as a comparator […]
Exploring Current Mirror Circuits with Practical Designs
In this post I have explained some important current mirror circuits, and how to design practical circuits using current mirror concepts. Current Mirror Definition A current mirror is a circuit that copies a current through one active device by regulating the current in another active device in the circuit, maintaining a constant output current independent […]