This is FM transmitter in VHF range. As Figure 1 Sonar with up to 2 watts, when used with a supply voltage of about 24V. In the case of applications typically do not want a high transmission. This circuit requires only one power supply 9V Only. If used voltage level of the power supply more […]
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The filter circuit of this main circuit will sent to through to the signal that middle frequency. At the same time is attenuated the others frequency into input signal to R1 through the base of emitter circuit as complementary form (T1/T2). And the feedback from the emitter lead of T1 and T2 through twin-T to […]
Sometimes disorders of cars on the electrical system. Can not be analyzed by the voltage of the battery, always. Using an ammeter to check. It will help to diagnose the problem better. This circuit is an amp meter LED display is not afraid of vibration. From circuit shown in Figure 1, R1 is resistor that […]
This dynamic compressors circuit that The reduction rate of the signal up to 20 dB at input between 100 mV to 10 volts. This circuit does not use external power. But used part of the input signal into a power supply. To reduce size of the signal. A part of the input signal is rectified […]
This circuit can be used to prevent a power failure. Example: Microcomputer systems. This circuit will send logic pulse “1″ shortly before the power goes out completely. To trigger the power outage protection circuit for working. Or use to trigger the storage circuit to keep your important data in memory is used by battery power. […]