The 72 volt winding will get you 100 vDC at 0.25 amp. Add the 8 and 9 volt winding in series will get you close to 120. Priced right at $2.99. No, I don't own any interest in the company. https://www.surpluscenter.com/Electrical/Transformers-Bridge-Rectifiers/Transformers/115-8-9-15-72-Volt-AC-25-35-075-24-Amp-Transformer-15-998.axd John, W9DDD