Discrete boost converters are still very important for power applications that need to be cheap, easy to change, and educational. However, it has a big problem when trying to get high voltage gain from low input sources. Conventional designs often don't work well below 5V because of IC oscillator thresholds, and single-transistor switching stages are not very efficient and put a lot of stress on the circuit. This work fills in these gaps by creating a new architecture that focuses on reliability and includes a discrete astable multivibrator, a cascaded BJT driver network, and an active Zener clamping-regulation circuit. The proposed converter clearly works well with an input voltage as low as 1V, has a voltage gain of more than 2.5, and reaches a peak efficiency of 94.6%, all while keeping great line/load regulation and transient response. These important results, which were confirmed by simulation and experimental prototyping, show that the design is better than most IC-based converters in terms of input range and light-load efficiency. The study presents a thoroughly characterized, reproducible framework that revitalizes the practical application of discrete BJT-based power electronics, presenting a resilient alternative for low-voltage energy harvesting, prototyping, and educational initiatives.
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