Maybe you are familiar with the op-amp as an ... as such. Simple long-tailed pairs had a long history prior to the advent of integrated circuits, starting in the 1930s with tube circuits and ...

[Mikremk] demonstrates this with a simple but effective amplifier using a PCL82 triode-pentode. It’s a conventional tube amplifier circuit in which the triode is a preamplifier for the pentode ...

This simple scheme is based on the circuit shown below (Figure 1 ... As one can see, the second harmonic of a 5 to 15 W tube amplifier dominates the spectrum, and EL34 type lamps are used in the ...

The circuit in Figure 1 is suited for inductive sources such as a dynamic microphone, transformer or inductance sensor/pick up. Figure 1 A simple amplifier circuit suited for inductive sources such as ...

The main reason is pretty simple ... circuit delivers a much wider range of useful tones with increased clean headroom, tighter response and bass that retains definition and punch even when the ...

Op amps excel at providing many useful and ... A few examples will help solidify the process and truly demonstrate how simple these circuits are with this technique. In this first example, design ...