This website is designed to summarize the results of modeling several amplifier designs.
The current working circuit:
Schematic diagram of the Cascode Circlotron on Bipolar Transistors
Why did I choose Bipolar Transistors for the Cascode Circlotron?
Unlike classic tube OTL or MOSFET-based designs, implementing a circlotron with bipolar transistors provides several critical advantages:
- Acoustic Control: Low output impedance delivers tight and detailed bass, unattainable for most tube designs.
- Cascode Linearity: Using bipolar transistors in a cascode configuration minimizes junction capacitance, ensuring crystal clear high-frequency response.
- Stability and Consistency: With galvanically isolated bias sources, the circuit maintains excellent thermal stability and high slew rate.
- Energy Efficiency: The complete absence of resistors minimizes energy loss and eliminates the "first watt effect".
The Key Feature of This Topology
This implementation of the cascode circlotron is completely resistorless. This fundamentally distinguishes the circuit from classic solutions, achieving exceptional signal purity by eliminating thermal noise and phase distortion introduced by passive components.
This solution is for those seeking honest, uncolored sound and engineering precision.