Krohn-Hite 7602M

The Krohn-Hite 7602M is a wideband power amplifier delivering precise signal amplification across DC to 1 MHz with output power ranging from 5 W to 34 W continuous, depending on load impedance and frequency. The unit operates in three selectable gain modes with continuously variable gain up to 42 dB, making it suitable for laboratory testing, system integration, and industrial measurement applications requiring high fidelity and low distortion.

Technical Specifications Frequency Range & Power Output

DC to 1 MHz operating range

34 W continuous at DC (1k Ω load)

68 W peak at DC

34 W continuous DC to 500 kHz (1k Ω load)

5 W continuous to 1 MHz (1k Ω load)

10 W continuous 100 Hz to 1 MHz (600 Ω load)

5 W continuous DC to 100 Hz (600 Ω load) Output Voltage & Current

282 V rms open circuit, 800 Vp-p

130 V rms into 1k Ω load (DC to 500 kHz)

80 V rms into 1k Ω load at 1 MHz

55 V rms into 600 Ω load (DC to 100 Hz)

80 V rms into 600 Ω load (100 Hz to 1 MHz)

±200 mA rms output current (910 Ω load, DC to 500 kHz) Gain & Frequency Response

Gain up to 42 dB with three selectable ranges: 0–14 dB, 0–28 dB, 0–42 dB

±0.1 dB flatness DC to 10 kHz

±0.25 dB to 200 kHz

±0.5 dB to 500 kHz (0–130 V rms output)

±0.5 dB to 1 MHz (0–80 V rms output) Distortion & Performance

<0.01% harmonic distortion to 5 kHz at 175 V peak output

<0.05% at 200 V peak output

600 V/µs slew rate (400 Vp-p)

<0.5 Ω internal impedance DC to 10 kHz; 5 Ω at 100 kHz; 20 Ω at 1 MHz

80 dB common-mode rejection ratio Output Control & Protection

Variable DC offset 0 V to ±200 V (open circuit)

2 mV/°C temperature drift; <1 mV for 10% line voltage change

<0.1% load regulation DC to 10 kHz, rising to 2% at 1 MHz

Foldback current limiter with front-panel clipping indicator

Key Features

Three amplifier modes: A, A–B, and –B

AC or DC input coupling selectable

Output stable into reactive and resistive loads

Optional remote gain control (Option 0015): ±10 Vdc proportional input

BNC input connectors; binding post output standard

Optional rear-panel BNC and binding post connectors available

Compatibility & Integration

90–132/198–264 VAC operation, 50–400 Hz, 200 W power consumption

Accepts reactive and resistive loads