Using music integrated circuit delay lamp

Description: The circuit utilizes a KD-9300 music IC, which activates when the button switch (SB) is pressed, causing the electric lamp (E) to light up for approximately 20 seconds before automatically turning off. The setup includes a half-wave rectifier and a regulator circuit that provides an output of about 3V DC to power the KD-9300 music IC. In typical operation, the music IC is in a static state, with no output signal at the terminal (O/P). When the button is pressed, the triggering input for the music IC receives a high-level signal, which activates the output, allowing the internal storage of music to play. The circuit is designed to smooth the output, turning on diode (VT1) and allowing current to flow through resistor (R) into the thyristor (VTH), thereby powering lamp (F). After the music plays, VT1 returns to an off state, causing VTH to lose its trigger current, which turns off the lamp. The KD-9300 music IC can also be referred to as HFC-9300. The delay circuit is primarily composed of the music storage integrated circuit, which controls the length of time the music plays. It is advisable to select a relatively quiet piece of music, typically around 20 seconds in duration. The circuit includes an external resistor, usually 68kΩ, which influences the read-out rate of the music signal and can be adjusted to extend the delay time.

The KD-9300 music IC circuit is designed for specific applications where a timed audio output is required, such as in novelty or decorative lighting systems. When the button switch (SB) is engaged, it initiates the circuit operation, causing the lamp (E) to illuminate for a predetermined duration. The half-wave rectifier is essential for converting the AC input voltage to a usable DC voltage, which is then regulated to ensure stable operation of the music IC.

The output terminal (O/P) of the KD-9300 typically remains inactive until the circuit is triggered. Upon activation, the internal mechanisms of the IC generate a musical output, which is then amplified and delivered through the connected load. The use of diode (VT1) is crucial as it allows for the control of current flow, enabling the circuit to manage the power supplied to the lamp (F) effectively.

The thyristor (VTH) plays a pivotal role in maintaining the lamp's illumination during the music playback phase. Once the audio output concludes, the circuit resets, and the thyristor is turned off, ceasing the lamp's operation. The integrated music selection feature of the KD-9300 allows for various sound outputs and can be tailored to the user’s preference.

Additionally, the external resistor connected to the circuit serves to modify the timing characteristics of the delay function. By adjusting the resistance value, the duration of the audio output can be extended, making it versatile for different applications. This flexibility is particularly advantageous in environments where varied timing is required for aesthetic or functional purposes. The design emphasizes simplicity and efficiency, making it suitable for a range of electronic projects.A spider is a delay KD-9300 music IC, when you press the button switch SB, electric lamp E lights up, the delay about 20s, lamp E automatically turn off. VD, vs, C., (, And oth er simple composition capacitance drop Jl, half-wave rectifier regulator circuit, the output about 3V DC voltage for KD-9300 boat music IC power. Usually, sound music} U integrated way off ten static, the output of the terminal O/P no signal output, two diode VT1 off, thyristor VTIi turned off, the lamp F Tigers.

Ji lights when necessary, click the SB. triggering end music integrated circuits TRI triggered by the high level, O/P end, or output internal storage of music accounted signal, the c. smoothed make VT1 turns on, then there is current through R, flowing into the thyristor VTH pole f] so VTH liter pass, powered lamp f light.

after playing the sound of urine, VT1 recovery oFF-state, VTH lost in the post trigger current flows through the electric zero inflammation that is off, turn off the lights. called integrated music selection KD 9300, HFC-9300, etc. delete numbers, the delay circuit when cyberspace is mainly composed music store integrated circuit song signal related to the length of time, pay attention to the choice of music Pang just asked a relatively quite, usually 20s or so.

there are an external oscillator resistor there blood in sacrifice music integrated circuit lug, usually 68kfl, its resistance Ding decision within the reservoir music signal read-out rate, increasing the resistance of accounts can be extended delay circuit when asked.