2025 One Hertz Challenge Unleashed: Amp Amplification Frenzy
In an unexpected turn of events, a new contender has entered the "Ridiculous" category of the 2025 One Hertz Challenge – the Analog 1 Hz Sinewave Generator. Designed by Phil Weasel, this unique device stands out from the crowd with its innovative approach to generating a sine wave.
The Analog 1 Hz Sinewave Generator is a physical, tangible device designed for benchtop use. Unlike any previously mentioned generators or devices, it has a specific frequency of 1 Hz and outputs a sine wave. However, what sets it apart is its method of sine wave generation. Unlike many devices that rely heavily on operational amplifiers (op-amps), the Analog 1 Hz Sinewave Generator does not use op-amps as its primary method for generating a sine wave.
There are several ways to generate a sine wave without exclusively using op-amps. For instance, one practical approach is to use bipolar junction transistors (BJTs) in a phase-shift oscillator circuit. This method involves combining transistor amplifiers with a frequency-selective feedback network composed of cascaded RC filters for a total phase shift of 360°, creating the conditions for oscillation at the designed frequency.
Another method is Direct Digital Synthesis (DDS) via microcontrollers or Digital Signal Processors (DSPs). This software-based method generates a sine wave digitally and can be implemented without op-amps on the analog output stage.
Lastly, some analog function generators produce sine waves by shaping a triangular waveform with back-to-back diodes to approximate a sine shape. This simpler analog nonlinear shaping circuit does not rely exclusively on op-amps.
The Analog 1 Hz Sinewave Generator employs one of these methods, ensuring it stands out in the "Ridiculous" category of the 2025 One Hertz Challenge. It is designed to bring stiff competition by offering a unique approach to generating a sine wave.
Interestingly, the frequency range of the Analog 1 Hz Sinewave Generator extends beyond its namesake frequency, with a range from 0.01 Hz to 60 MHz. Moreover, the output waveform can be a sine, square, or saw wave, providing versatility in its applications.
Phil Weasel built the Analog 1 Hz Sinewave Generator with the intention of challenging the norms of sine wave generation. By not relying solely on op-amps, the device aims to address the issue of too many choices in the world, offering a refreshing alternative in the field of electronics.
With the Analog 1 Hz Sinewave Generator entering the competition, the "Ridiculous" category of the 2025 One Hertz Challenge is sure to be heated and exciting.
The Analog 1 Hz Sinewave Generator, unique in its design, does not utilize operational amplifiers (op-amps) as its primary method for generating a sine wave, showcasing an innovative approach in the field of pcb technology. Despite its name, the device offers a frequency range from 0.01 Hz to 60 MHz, providing versatility in its applications.
