0

Modification of a simple amplifier with TOC class A

The article explains, how by finalizing the circuit, you can significantly improve the characteristics of the popular UMZCH. Amplifier Flavio Delepiano [1] sounds very good, especially at low frequencies, Fig.1. Similar amplifiers with current feedback (TOS) were popular in the early 1960s, However, interest… Continue Reading

0

5-Dot audio level indicator

5-Dot audio level indicator

The basis of this device is the integrated circuit A6966 manufactured by UTC (Unisonic), supplied in a convenient SIP9 housing. The electrical diagram of the audio signal level indicator is shown in Fig. 1, this is a typical application of this microcircuit, recommended by the manufacturer in the reference to the catalog. An amplifier is installed at the input of the U1 microcircuit… Continue Reading