This circuit generates a two-tone effect very much alike the cuckoo song. It can be used for door-bells or other purposes thanks to a built-in audio amplifier and loudspeaker. Agreeable, very close ...

[RichDecibels] wrote in to share a new device he built called the “Sinster Tone Generator”. It’s basically a bass drone synthesizer that uses two pairs of heterodyning oscillators to generate the ...

The circuit was designed similarly with door bell units as it generates an audio of bells ringing with dual tones. MC14106 – a hex Schmitt trigger constructed with MOS P-channel and N-channel ...

[Eric Wasatonic] had a box of SWB2433 transistors that he had very little information about. In order to discover their properties, he fired up his curve tracer to compare these transistors with more ...

Sonifex has released its latest rack-mount Reference Monitor with Dolby decoding, the 1RU RM-4C8. The company is also introducing a new 3G/HD/SD-SDI distribution amplifier and a BLITS tone generator ...