Use LM386 as a single-chip radio

This article mainly introduces the steps of two kinds of tube FM radio production. Since FM radio (TV sound) works in the ultra-high frequency range, in the amateur system ...

Transistors are the unsung heroes of the Internet era, but people outside the semiconductor industry rarely notice their existence. On December 16, 1947, ...

This article mainly introduces the complete circuit diagram of transistor radio (detailed explanation of superheterodyne / CMOS / frequency conversion circuit). Peak envelope detection requires input high frequency ...

The overall design block diagram of the radio is shown in Figure 1. This radio uses a single 3.7 V lithium battery with a capacity of 1500 mAh as a power source.

This article mainly introduces the electronic circuit diagram of the electronic tube / red light 711 radio circuit. There are two kinds of self-excited oscillation feedback circuits in the frequency conversion circuit: cathode feedback and ...

This article mainly introduces the circuit diagram of superheterodyne radio (five superheterodyne radio circuit design schematics). The superheterodyne radio is mainly composed of ...

Superheterodyne radio refers to the process that the input signal and the local oscillation signal generate a fixed intermediate frequency signal. If you put the radio station's high-frequency signal received by the radio ...

The superheterodyne radio first converts the received radio signals of different frequencies into a fixed intermediate frequency signal (China's stipulated intermediate frequency signal is 465kHZ) ...

The radio has been widely used in daily life. This article introduces the construction principle of the radio and the role of the radio, and finally introduces this article in detail ...

If the radio is not turned off for a long time, the battery life will be shortened, and the life of the radio will also be affected. This article will introduce how to make a ...

Antennas suitable for receiving AM radio signals in the frequency range of 522 to 1,700 kHz are usually ferrite rod antennas. These ones...

FM radio is a radio that transmits radio signals by using FM frequency carrier. Due to the shorter wavelength used, the transmitted signal is better than ...

The production of this simple radio is very simple, by changing the size of the inductance and capacitance to receive the simple radio in the middle of 550kHz to 1600kHz ...

L1, C1 is the receiving resonance circuit, R1 is the DC negative feedback resistance, C2 is the AC bypass function, the received signal is amplified by the gate A at high frequency, ...

Beijing, China-August 10, 2017-Silicon Labs (also known as "Science Technology", NASDAQ:

1. Change the DC working state of the transistor to change the current amplification factor β of the transistor. 2. Insert an electronically controlled attenuator between the amplifier stages. ...

In today's rapidly developing information society, however, the radio carries memories of many people. It used to be our source of knowledge and news, providing entertainment ...

In February 2016, Johann Hiebl, the head of infotainment and intelligent communication business unit of Continental Group, said: "The car entertainment department ...

With the development of electronic technology and intelligent terminal equipment, automotive electronics, one of its important applications, is showing explosive growth. Among them, in-vehicle infotainment systems ...

This article introduces the main performance, functional block diagram and application circuit diagram of SN761633.

If you like to perform different performances for your neighbors or family on Halloween night, then as an engineer, you should also like to use ...

Silicon Labs (NASDAQ: SLAB) today announced the launch of the latest generation of extensive ...

We have spent the end of the end of the world indicated in the Mayan calendar in 2012, but the foreign guys are always worried about the sky, and they began to worry just after the end ...

In the 46-year history of the CES conference, the number of participants has indeed increased rapidly every year, and this year's CES conference may set a new record of the number of participants ...

The following is a 9W audio power amplifier (PC2002) circuit diagram introduction and description: PC2002 is an audio power amplifier integrated circuit, using 5 feet ...

The radio circuit part uses a miniature radio integrated circuit 7642, similar to 85414, IN414, MK484 and ...

A typical metal detector is composed of basic circuits such as dual oscillators, mixers, and differential frequency amplifiers. When the detection coil is close to a metal object, the inductance changes ...

The use of lasers to propagate radio signals is the visualization of changing electrical signals. Prepare materials: a small radio, an audio transformer, a laser ...

In the fiery sixties and seventies, the 68-1 type regenerative single-tube transistor radio was a hit, and there were also double-voltage detection single-tube crystals ...

There are many ways to classify radios. According to the components, they are generally divided into discrete component radios and integrated circuit radios. Here we mainly introduce integrated circuit radio ...

By BBC Research & Development, Global Radio and Frontier ...

The two fixed coils L1 and L3 of the variable inductor are wound on a one-inch-diameter plastic tube (the outer diameter of which is about 11/4 inches). each...

Electronic enthusiasts network provides you with a single tube FM radio schematic, there are other related resources on this site, I hope to help you!

The electronic enthusiast network provides you with the circuit principles and circuit diagrams of bus radios and amplifiers. There are other related resources on this site, I hope to have something for you ...

Nowadays, new members of the radio family are constantly joining, such as satellite broadcast receivers. When society enters the Internet age, there is a network ...

Electronic enthusiasts provide you with the circuit diagram of Desheng CXA1191M radio!

The sound quality of 5500W is indeed very good, but no matter how good the sound quality is, there are imperfections in listening carefully ...

In addition to a small part of the resistors and capacitors used in simple radios, most of the values ​​are not required to be very accurate. There are many resistors and capacitors are root ...

The touch timing switch circuit introduced here is to directly use a transistor to turn on or off the power supply, instead of a contact switch such as a relay, because it allows current to pass ...

General transistor radios and AC tube radios do not have a power output indicator. Here we introduce you to one of the simplest additional light-emitting diodes (LE ...

All the 6P1 cattle and tubes used the old tube radio, the chassis is aluminum. Resistance and capacitance are new. The coupling is WIMA, which used to be a layer cake ...

D2204 monolithic FM AM radio circuit, with multiple functions, it can complete AM oscillation and frequency conversion at the same time, AM / FM mid-amplifier, automatic gain ...

The active antenna of the radio here introduces an active antenna, which can be used as a medium wave, FM and short wave antenna. In the short wave band, the active antenna receives ...

Self-contained desktop semiconductor radio with semiconductor power supply, users often forget to turn off the 220V power plug after turning off the volume switch, resulting in a stable

The flashlight with two No. 1 batteries does not need to be changed. It is cheap and can be used as an external power supply for 3V pocket radios.

Passive radio circuit is interesting, you have time to try it

In the end of the 1950s and early 1960s, several simple super-regeneration architectures appeared for the production method of single-tube super-regeneration FM radio. The author is ...

The Silicon Division AM / FM receiver chip Si4830 enables the analog radio to have digital performance Silicon Labs

The sensitivity of the test indicators of the radio and the player: â‘´ Input 1kHz 30% AM signal, carrier wave 1000kHz, adjust the sound ...

The application design of the magnetic antenna and the intermediate frequency transformer in the radio This article analyzes the important components in the radio-the magnetic antenna and the intermediate frequency transformer ...

Home theater set radio function ...

World wide satellite radio output / audio password output & n ...

Satellite radio band ...

The simplest self-made radio (1) structure: There are three knobs at the front of the bottom plate: on the left is a 36 ...

6J8P FM radio circuit diagram FM radio (TV sound) works in the ultra-high frequency range

How can the ore radio with audio amplifier amplify the sound of the ore radio? According to the results of our experiments, improve the efficiency of the amplifier ...

CXA1019S radio circuit diagram

Transistor AM radio The picture above is a typical transistor AM

TA7781P / TA7781F FM / AM monolithic radio circuit

TA8100N / TA8100F FM / AM monolithic radio circuit diagram

Circuit diagram of low-power AM radio formed by TA7641BP

Repair broken wire picture tube with tube radio Prepare one tube radio, two crocodile clips, 450V

Repair of deformation of radio belt

How to install the radio tuning cable

Common tuning mechanism of radio

Basic structure principle of radio tuning mechanism Radio tuning mechanism can be roughly divided into direct tuning and slow tuning

FM radio limiter circuit

How to use radio to find underground cables

How to use radio to judge whether the infrared remote control transmitter of the TV is good or bad?

How to use the radio to judge the internal fire of the high-voltage package of the TV. For the judgment of the high-voltage internal fire failure, when there is a grating, you can observe the light and dark changes of the grating, ...

How to use the radio to determine whether the TV line oscillator is working.Turn on the power switch of the semiconductor radio, switch the TV cabinet on, and turn it on to work ...

Radio single-tube frequency conversion circuit diagram

Circuit diagram of FM and AM radio detection and frequency discrimination

Semiconductor radio detection circuit diagram

Kaige 4B7 radio OTL amplifier circuit diagram

Emitter output circuit diagram of simple radio

FM radio circuit diagram of computer selection, schematic diagram TDA7088T is Philips

TDA7088T FM radio circuit diagram, schematic diagram TDA7088T is the FM radio integrated block developed and produced by Philips ...

Solar dry battery dual-purpose earplug radio

Simple high frequency radio

Volt integrated hybrid radio

Amplified jack for semiconductor radio

Timing FM radio circuit diagram

Touch-type radio receiving and indicating circuit

Radio assembly and debugging 1. Experimental purposes: 1. To learn the welding radio to master the welding method 2. To master the welding method through the welding radio 3.

Red Light 711 series AC six-tube two-band radio mechanical drawing

Red light brand 711 series AC six-tube two-band radio inductance component data chart