Powerful repeater signal.
Umoschnenie power sources.
This chip is included as a repeater signal, output voltage (output 4) is the input (output 1), and the output current can reach values of 3.5 A. Thanks to the built-protection scheme is not afraid of short circuits in the load. The stability of output voltage stability is determined by reference, that is stabilitrona VD1 Fig.7 and integral stabilizer DA1 Fig.8. Naturally, the pattern shown in Fig.7 and Fig.8, you can collect stabilizers and other stress, just need to keep in mind that the total (full) power dissipated by the chip should not exceed 20 Watts. For example, you need to build a stabilizer at 12 V and current 3 A. There is a ready source of food (transformer, rectifier and filter capacitor), which gives U IP = 22 V, with the necessary current load. Then on the chip occurs voltage drop U IMS IP = U - U VYH = 22 -12 V = 10V and a current load 3 A dissipated power reaches values of R = U RAS IMS * I * N = 10B = 3A W 30, that exceeds the maximum value for TDA2030A. The maximum permissible voltage drop in the IMS can be calculated using the formula:
A simple laboratory power supply.
I MAX = R RAS.MAH / U IMS
Stabilized laboratory power supply.
An adjustable current source.
A powerful generator of rectangular pulses.
Plans powerful generator of rectangular pulses are shown in Fig.12 (with bipolar diet) and Fig.13 (with unipolar meals). Plans can be used, for example, the device alarm. This chip includes a Schmitt trigger, and the whole scheme is a classic relaxation RC-oscillator. Consider the job figures. 12. Let's assume that at the time of the power output of IMS is moving towards a positive level of saturation (U VYH = + U IP). Capacitor C1 begins to be charged through resistor R3 with a constant time-Cl R3. When the voltage on C1 will reach half a positive voltage power source (+ U IP / 2), IMS DA1 switch to a negative saturation (U VYH =-U IP). Capacitor C1 will discharged through resistor R3 at the same time Cl R3 to the voltage (-U IP / 2) when the IMS again switches into a positive state of saturation. The cycle will be repeated with a 2,2 C1R3, regardless of the power supply voltages. Frequency pulses can count on the formula:
A powerful low-frequency generator harmonic oscillations.
In conclusion, the chips must be installed on the radiator with ohlazhdaemoy surface area of not less than 200 cm 2. When razvodke agents of the printed circuit board for the amplifier must be Bass track to "earth" tires for input, as well as the power source and output summed with the different parties (conductors to these terminals should not be a continuation of one another, and assembled together to form stars "). This is necessary to minimize the background of the AC and eliminate possible self-amplifier with output power close to the maximum.