This amplifier with the EL84 tube is a European commercial type from Corpim mounted on a printed circuit board. The diagram appeared in a September 1958 Radio Electronics magazine.
This circuit was found in February 1976, Radio Electronics magazine. The components are from the...
Analog Devices AD7768 24-bit sigma-delta (Σ-Δ) ADCs include an Σ-Δ modulator and digital filter...
We found this circuit in Linear Technology Applications 1993. The maximum output current is 5 A...