Analog video switch and amplifier with direct coupled output
This circuit shows a CA3256 switch/amplifier connected for a direct-coupled output. One of four channels can be selected in parallel with channel 5. The analog ...
Video distribution amplifier
The resistors in the output lines are included to isolate reflections from unterminated lines. If the line characteristics are known, the resistors can be delet...
Typical ECG746 Video IF Amplifier and ECG747
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50 watt PMS hi fi amplifier for an 8 ohm load
50-watt PMS hi-fi amplifier for an 8-ohm load. This circuit delivers about 56 volts peak to peak across an 8-ohm load. Distortion is about 1 % at 20 kHz. The ga...
Servo motor preamplifier
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VIDEO PREAMP
An NE592 or LM733 is used as a general-purpose video amplifier in this schematic. J2 and J3 provide two anti-phase outputs. R2 is a gain control. The bandwidth ...
Simplified magnetic amplifier circuitry
The power that is used for realignment is a loss as far as the rest of the circuit is concerned. Because of this hysteresis loss in the saturable-core reactor, ...
Klipsch Promedia V.2-400 V4.1 V2.1 And V5.1 Amplifier Repair
I began tracing the BASH amplifier circuit for my V. 2-400. The following schematics are my best effort to document what I found. I have also described design d...
Klipsch Promedia V5.1 Amplifier Repair
Take a V2-400 and use the sub-woofer amplifier for the center channel. Then add a separate Digital Converter just for the added sub-woofer amplifier and you hav...
Video Amplifiers for the Mirror Screw
The light sources for mirror screws based on my work, consist of a dozen or more of high brightness LEDs, in colors or white, typically connected in parallel or...
Linear amplifier
10W HF linear amplifier circuit schematics free electronic circuits diagram wiring design plans schema DIY projects handbook guide tutorial schematico electrG³...
Audio Amplifiers
The first choice is usually an integrated circuit designed for the purpose. A typical assortment can be seen on this National Semiconductor page. Discrete desig...
Univox 1221 1220 mods
To my new bestest pals: Anyone with experience on the old Uni`s? Model 1221. Looking to switch her to el34`s from 6l6`s. Not the savviest in the tuber.....
JCM800 2204 bias problem
Alright, my 2204 won`t bias properly. I can`t get the tubes to idle at more than about 14 W (435 V * 33 mA cathode current). I popped a set of old Telefunkens i...
Restoration project: Webster-Chicago 166-1
I`ve had this old amp for about years, and friend of mine has volunteered to do the work to restore it. This is a Webster-Chicago 166-1 amplifier.....
Philips Amplifier 200w Circuit
This circuit possible to deliver about 200W power output produce by Phillips Semiconductor. Using 2 PHP1BN11QT, input voltage between 30 and 45 VoltsDC for this...
Audio Amplifier Schematic
A Very high power amplifier with 10 pairs of power transistor. Can use MJ15024 and MJ15025 or MJ21193 and MJ21194. Those 20 pieces transistor work as final acti...
Audio Amplifier Diagram
Based on four chips, TL072, TL074, MN3101, and MN3004 which produce four channels of output, the center, rear, front right, and front left surround audio accomm...
30w Audio Amplifier Circuit
The circuit of this 30W audio amplifier produce a clear audio output quality. The circuit module doesn`t have any improvement. With Darlington pair in tra. [rea...
300w Amplifier Diagram With MJ15003 and MJ15004
Conventional power amplifier with high-pass and low-pass filter. Supplied 60V DC, this circuit can produce about 300W sound power. Opamp NE5534 is arranged as a...