A very simple musical door bell circuit can be built and installed in homes, the design features a replaceable music chip option, and an adjustable ringtone duration, as per the […]
Audio and Amplifier Projects
Music Triggered Amplifier Speaker Circuit
The circuit idea explained below enables a power amplifier loudspeakers to switch ON only when there’s an input music available, otherwise it makes sure that the loudspeakers remain shut off. […]
Modify Human Speech with this Digital Voice Changer Circuit
The post explains a voice modulator circuit which will change or transform an individuals unique voice into a completely new form. The new voice will be different to the original […]
Make this Simple Music Box Circuit
This simple circuit can be used to emulate the operation of a music box. The number of notes may be limited to 10 at the most, and therefore is capable […]
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 […]
3.7 V Class-D Speaker Amplifier Circuit for Differential Analog Input
A class D amplifier is basically a category of amplifier in which the power devices (mosfets and BJTs) are operated like switches. The associated output devices in such amplifier circuits […]