The tremolo effect circuit widely used, making noise in the electronic music scene. The height of the modulation signal by low frequency between 1 Hz to 10 Hz. This result will sound good, When frequency be modulated in sine. Figure 1 Tremolo Effect Circuit using uA741 The circuit as Figure 1. Music signal is buffered […]
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In the receiver, stereo radio station. Usually have more noise than listening in mono. Because, the stereo system is splits signals-to-noise ratio. (S/N) There level lower, cause interference, in mono with less. becausePhase noise of the 2-back phase. When combined into a mono signal was decreased by default. As principle the noise is high frequency, […]
There are many ways to build the dual power supply from a transformer that has one secondary coil.This good way as Figure 1 use two bridge diodes. The first section is normally working, others section (D1-D4) will work by AC signal from C1 and C2. To filter DC voltage of out others bridge diode of […]
There are many ways to filter the hum noise from AC line (50 Hz) from audio signal away. A frequency filter usage is a simple ways that include RLC as the electronic coil. In Figure 1 is the specific frequencies filter. Figure 1 the simple specific frequencies filter using RLC If thoroughly consider to see […]
Usually an analog to digital converter circuit or A/D that need to use the high accurate devices and and high difficult. But this circuit, The error of all devices does not affect the accuracy of the circuit. We just use the reference voltage only. How it works The CA3130 op-amp IC1 is assembled as the […]