Stabilized-amplifier
This amplifier functions over a wide range of gains, typically 1-10. It combines the LT1010 and a fast discrete stage with an LT1008 based de stabilizing loop. ...
Current-booster
The LT1012 corrects de errors in the booster stage, and does not set high-frequency signals. Fast signals are fed directly to the stage via Q5 and the 0.01-uF ...
Wide-band-agc-amplifier
The NE592 is connected in conjunction with a MC1496 balanced modulator to form an excellent automatic gain control system. The signal is fed to the signal inpu...
Cascaded-amplifier
Cascaded amplifier sections are used to extend bandwidth and increase gain. Using two HA-2539 devices, ...
Jfet bipolar cascode video amplifier
The JFET-bipolar cascode circuit will provide full video output for the CRT cathode drive. Gain is about 90. The cascode configura-tioneliminates Miller capacit...
High impedance low capacitance amplifier
This compound series-feedback circuit provides high input impedance and stable...
Fet cascode video amplifier
The FET cascode video amplifier features very low input loading and reduction of feedback to almost zero. The 2N5485 is used because of its low capacitance and ...
Two-stage wideband amplifier
A wideband high gain configuration using two SL550s connected in series. The first stage is connected in common emitter configuration, the second stage is a com...
Video amplifier and video detector
The circuit has a typical voltage gain of 84 dB and a typical AGC range of 80 dB. It gives very small changes in bandpass shape, usually less than 1 dB tilt for...
Voltage-controlled amplifier or tremolo circuit
The transistors form a differential pair with an active current-source tail. This configuration, known technically as a variable-transconductance multiplier, ha...
200Mhz cascode amplifier
This 200 MHz JFET cascode circuit features low cross-modulation, large signal handling ability, no neutralization, and AGC controlled by biasing the upper casco...
135-175Mhz amplifier
Cl. C2 ARCO #462,2 to 60 pF, trimmer capacitors Li, 3 turns byss wire #20 AWG on 1/4" diameter L2, ß turns *20 AWG on 114" diameter Ti...
200Mhz cascode amplifier
This 200 MHz JFET cascode circuit features low cross-modulation, large signal handling ability, no neutralization, and AGC controlled by biasing the upper casco...
Two-meter 10 watt power amplifier
This 10-watt, 144-MHz power amplifier uses a TRW PT5757 transistor. LI is 4 turns of no. 20 enameled, 3/32" ID; L2 is 10 turns of no. 20 enameled, 3/32" ID...
Low-noise broadband amplifier
The amplifier provides 10 dB of gain from 10-600 MHz and has a 1-to-l match at 50 ohms. The BFR91 has a 1 dB noise figures at 500 MHz, The circuit requires 13 V...
Low-noise 30Mhz preamplifier
Low-noise preamplifier has a noise figure of 1 dB at 30 MHz and 3 dB bandwidth of 10 MHz. Gain is 19 dB...
10Mhz coaxial line driver
The circuit will find excellent usage in high frequency line driving systems that require wide-power bandwidths at high output current levels. (IC=HA2530) The b...
Single-device 80 w 50 ohm vhf amplifier
The amplifier uses a single MRF245 and provides 80 W with 9.4 dB gain...
140W amateur radio linear amplifier 2-30Mhz
This inexpensive, easy to construct amplifier uses two MRF454 devices...
100W 420-450Mhz push-pull linear amplifier
This 100 watt linear amplifier may be constructed using two MRF309 transistors in push-pull, requiring only 16 watts drive from 420 to 450 MHz...