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Skema Penyearah Tiga-fasa

Tuesday, September 21, 2010

To minimize the low frequency ripple without using a large LC filters, active filters such as the installation can be seen in Figure 3 (a) has been proposed in the literature [80-10]. Figure three (b) shows an equivalent circuit of the dc side of Figure 3 (a). Vd states the average value (dc component) and declare the filter capacitor voltage ripple. If the active filter is controlled so as to produce the voltage ripple voltage ripple burden no longer contain. In these systems, a passive LC filter is used to reduce ripple and high frequency active filter to reduce low frequency ripple. Therefore, the required size of passive filter is not too large. This active filter can be implemented with a series of linear mode power converters and switching. As mentioned previously, the relationship between the series active filter with a load capacity of the current causes the active filter must be at least equal to the maximum current load, although the low-voltage itself, which is equal to the voltage ripple is compensated. Since a large current capacity required, the application of this method for very large currents will complex and inefficient.

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Skema Elektro Lampu Emergency

The circuit Skema Elektro Lampu Emergency scheme is often called the light of this cas I've tried and this circuit can operate for eight hours depending on the batteries that we use but more effective if we use the dry batteries but the price is quite expensive and use the relay as an automatic switch so we do not have to bother because the circuit will automatically go on when the lights went out and and where electric lights, the circuit will automatically initiate the charge and the circuit is very suitable for the tasks of school if it is less obvious


what we need is • TRAFO = 5A CT /1
• TRANSISTOR =MJ2955/1
=BC 548 A/1
=BD 140/1
=L7812 CV/1
• RESISTOR =12 KΩ/1
= 10 KΩ/1
=82 KΩ/1
=1M Ω/1
=8K2 Ω/2
=3K9 Ω/1
=100 Ω/1
=4K7 Ω/1
• DIODA =MDA 2500/2
=IN4002/1
• DIODA ZENER =6V8/1
=5V6/1

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Kenwood TS-520S/SE schema

For the S line, KWM-2 and KWS-1. Plug and play for the S line and easy install for the other radios.

Also available for Kenwood TS-520S/SE, Drake C line and several Hammarlund receivers.

Displays frequency with 10Hz resolution and displays operating mode (LSB, USB, AM and CW if you have the CW crystal installed in your radio).

Fully automatic. It measures the crystal osc. the PTO and the BFO and computes the carrier frequency.

Since it measures all the oscillators it takes into account any errors in the crystals in your radio.

Update rate of 5 times per second tracks real time while you tune.

Digital filtering to eliminate bouncing digits due to digital round off.

ie: does NOT bounce back and forth between 999 and 1000.
Kenwood TS-520S/SE schema

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