[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 ...

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 ...

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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 ...

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 ...

[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 ...