2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/98677We describe five high-voltage (60 to 550V peak to peak), high-speed (1-300ns rise time; 1.3-300MHz bandwidth) linear amplifiers for driving capacitive or resistive loads such as electro-optic modulators. The amplifiers use bipolar transistors in various topologies. Two use electron tubes to overcome the speed limitations of high-voltage semiconductors. All amplifiers have been built. Measured performance data is given for each.9pages, 6figures, 6tables, to appear in Review of Scientific InstrumentsInstrumentation and DetectorsOpticstext