Design of adjustable digital display low power regulated power supply based on LM317
As we all know, low-power linear regulated power supplies are widely used electronic equipment in electronic system testing, but at present, low-power power supplies are mostly fixed voltage output or voltage adjustable, but there...
Read more
Various circuits composed of LM386
The operating voltage range of the LM386 power amplifier integrated circuit is wide, the minimum is 4V, and the maximum is 15V. Its static power consumption is only 4mA, and the gain is up...
Read more
Application circuit of 74LS00
74LS00 is four groups of 2-input NAND gates (positive logic), a total of 54/7400, 54/74H00, 54/74S00, 54/74LS00.
Design of low-power active sonar transmitter circuit and receiver circuit based on LM386
The development of modern sonar technology began in the 20th century and was initially applied in the military, that is, to detect, classify, locate and track underwater targets, conduct underwater communication and navigation, and...
Read more
74LS244 pin diagram and function, application circuit
The 74LS244 is a 3-state 8-bit buffer, generally used as a bus driver. The 74LS244 has no latching function. The address latch is a temporary register, which temporarily stores the address code on the...
Read more
Pager circuit and voice circuit composed of LM386
Pager circuit is composed of a preamplifier stage and LM386 low-power integrated circuit. The circuit is simple, the cost is low, the volume is small, and it is easy to use. It is suitable...
Read more
High-fidelity power amplifier assembled based on TDA2030
TDA2030 is an integrated power amplifier that has been widely used in recent years. It has the characteristics of small size, large output power, low distortion, etc., and has an internal protection circuit.
Typical application circuit of LM386
To minimize external components, the voltage gain is built in to 20. But by adding an external resistor and capacitor between pins 1 and 8, the voltage gain can be adjusted to any value...
Read more
Design of small active two-channel speaker based on TDA2822
With the popularity of various personal music players, music has become one of the indispensable elements in our daily life. However, long-term use of headphones to listen to music can cause hearing damage.
Measures and precautions for preventing self-excited howling of LM386
LM386 is widely used in audio power amplifier circuits. In most occasions or when used alone, LM386 can work normally, but when used in conjunction with other circuits, it may cause self-excitation and reduced...
Read more