The 7500 provides selectable input coupling, either direct (DC) or capacitive (AC). The amplifier's output is protected from short-circuit or other abnormal load conditions by a unique output protection circuit, that uses a modified form of foldback current limiting.
The output stage is convection cooled by a special heat sink configuration. Output Power, Voltage & Current (Specifications apply using a 200 ohm resistive load). Power: 75 watts, DC to 100 kHz; 40 watts at 500 kHz; 10 watts at 1 MHz. Voltage: 125 volts RMS, DC to 100 kHz; 90 volts RMS at 500 kHz; 45 volts RMS at 1 MHz.
Current: 625 milliamperes RMS, DC to 100 kHz; 450 milliamperes RMS at 500 kHz; 225 milliamperes RMS at 1 MHz. 1 dB, DC to 1 kHz; ±1.5 dB to 500 kHz; -3 dB at approximately 1 MHz. At 75 watts into 200 ohms, less than 0.1 % to 10 kHz, approximately 1.5% at 100 kHz.Fixed, 20 db ±0.2 db (X10) or 40 db ±0.2 db (X100), or continuously variable, zero to 40 db. The item is in very good condition, recently factory calibrated. Oscilloscope shown is not included. 2 Units available, price is for each one. : 26 x 25 x 11. The item "Krohn-Hite 7500 DC-1MHz Wideband Power Amplifier, Factory Calibrated" is in sale since Thursday, August 22, 2019. This item is in the category "Business & Industrial\Test, Measurement & Inspection\Signal Sources & Conditioning\RF & Microwave Amplifiers". The seller is "neeo*" and is located in Jupiter, Florida. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Bangladesh, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Liechtenstein, Luxembourg, Monaco, Macao, Martinique, Nicaragua, Pakistan, Paraguay, Uruguay, South africa, Barbados, Bermuda, Cayman islands, Sri lanka, Maldives, Oman, Reunion.