Circuit Diagram

6n3 Tube amplifier power supply circuit diagram

Published:2011/4/2 4:24:00 Author:Nicole | Keyword: Tube amplifier power supply

As shown , after the power through switch and inductor, then through T1 transformer, through rectifier filter then supply power to he filament and TDA2822, T2 is connected to the T1 secondary, producing high voltage, the rectifier filter and regulator supply high voltage to 6N3. The signal outputed after amplified by 6N3, then through TDA2822 drive headphone. In this paper, the circuit is simple, without any debugging, the component parameters have been indicated in the schematic, the select of components can refer to other articles, to use some components with better performance. This machine is particularly quiet in the static, sound is very good.   (View)

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Polyphonic sound imitation generator

Published:2011/4/10 22:33:00 Author:Ecco | Keyword: Polyphonic , sound imitation , generator

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Noise generator composed of CH4040

Published:2011/4/12 0:38:00 Author:Ecco | Keyword: Noise generator

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Wien-bridge sine wave generator 1

Published:2011/4/10 22:42:00 Author:Ecco | Keyword: Wien-bridge , sine wave generator

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Wien-bridge sine wave generator 2

Published:2011/4/10 22:43:00 Author:Ecco | Keyword: Wien-bridge , sine wave generator

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6n11 electron tube power amplifier circuit diagram

Published:2011/4/1 4:03:00 Author:Nicole | Keyword: electron tube

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6922 electron tube amp circuit diagram

Published:2011/4/1 4:03:00 Author:Nicole | Keyword: electron tube

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Wien-bridge sine wave generator 3

Published:2011/4/10 22:45:00 Author:Ecco | Keyword: Wien-bridge, sine wave generator

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Amp circuit diagram with electron tube e88cc

Published:2011/4/1 4:02:00 Author:Nicole | Keyword: Amp, electron

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6p6p amp circuit diagram

Published:2011/4/1 4:02:00 Author:Nicole | Keyword: amp

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DC voltage bidirectional out-of-limit alarm circuit

Published:2011/4/6 4:10:00 Author:Nicole | Keyword: DC voltage, bidirectional out-of-limit

This alarm circuit will issue a directive when the power voltage is higher or lower a range, to remind us to adopt necessary measures. In this circuit, W2, W3 determines the starting value of upper and lower limit alarm. Circuit adjustment can be done by using a regulator.   (View)

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Multi-channel detector circuit

Published:2011/4/12 4:13:00 Author:Nicole | Keyword: detector

Using any fire, smoke, heat or other detectors and connecting to the primary relaxation oscillator, using GE-X5 thyristor to push 8Ω loudspeaker emits keke . Loudspeaker, 22.5V battery, 100kΩ and on/off switch are in series with the both ends of thyristor; connected a 1μF/25V capacitor to the both ends of thyristor-loudspeaker. Such as using cadmium sulfide photocell can detect the flashlight light beam of interloper.   (View)

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AC electric welding machine no-load energy-saving circuit

Published:2011/4/6 4:11:00 Author:Nicole | Keyword: electric welding machine, energy-saving

As shown in the figure, T1 is AC electric welding machine transformer. The power switch HK turns on, power transformer T2 obtains the electricity first, filter capacitor C1 obtains about 12V AC voltage. IC1, IC2 is two 555 time base IC. Because the voltage of initial state C2 is 0, the ②、⑥ pins of IC1 is low level, so ③ pin is high level, relay K is not pull-in, AC contactor KM is not work, electric welding machine is no energizing. At the same time, the multivibrator composed of IC2 starts working, the output frequency of ③ pin is about 10kHz pulse singal. After through R5, the later singal is added to one end of T1 secondary, the other end is connected to the grouding of control circuit, duing to T1 secondary winding has large inductance about 10kHz singal, so the current of this loop is lower, the voltage of transformer L is lower too. the other singal is coupled to C4, after VDR、VD9 rectifiers, C5 filter, the DC voltage turns VT1 on, VT2 off. So C2 is without charge current, IC1③ pin keeps high level. The circuit is in no-load energy-saving state.   (View)

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Multi-purpose FM signal generator

Published:2011/4/12 2:54:00 Author:Ecco | Keyword: Multi-purpose , FM signal generator

The multi-purpose FM signal generator is shown in the chart. VTl, VT2 form multivibrator, VT3 is emitter follower, which makes a frequency modulation to osicillating signal source of VT4, and sent by Tx antenna.   (View)

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Pulse width modulation circuit

Published:2011/4/10 22:48:00 Author:Ecco | Keyword: Pulse , width modulation

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Linear pulse width modulation circuit

Published:2011/4/10 22:49:00 Author:Ecco | Keyword: Linear , pulse width modulation

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Frequency shift keying signal (FSK) generator

Published:2011/4/12 3:37:00 Author:Ecco | Keyword: Frequency shift keying, signal generator

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Sine wave generator circuit(555)

Published:2011/4/12 3:38:00 Author:Ecco | Keyword: Sine wave generator , 555

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60Hz frequency source

Published:2011/4/12 3:33:00 Author:Ecco | Keyword: 60Hz, frequency source

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Laser transmitter linearity control circuit

Published:2011/4/6 4:11:00 Author:Nicole | Keyword: laser transmitter, linearity control

Used optical feedback technique can keep constant laser output in a wide temperature range. This circuit is a optical negative feedback circuit which is insensitive to temperature.   (View)

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