Music box voice circuit
Source: InternetPublisher:天天都吃好吃的 Keywords: Voice circuits switches speakers transistors Updated: 2020/11/18
Shown is the music box voice circuit , and LH348I in the picture is the voice generation circuit. After the switch is turned on, the voice is amplified by transistor VT1
and drives the speaker to produce sound.
- Build a Bluetooth-controlled wireless scoreboard
- Making a photometer with light measuring function
- Low cost LED automatic emergency light circuit
- battery charging circuit
- Lighting lamp voltage stabilizing circuit (2)
- Three-way music lantern circuit
- Mains undervoltage and overvoltage alarm circuit 2
- Four color light circuit
- Reverse polarity drive circuit
- Night target display circuit diagram
- Laptop photoelectric detection circuit
- Improve lighting power factor circuit
- Using 74LS244 to expand 24-channel input interface circuit
- Rural vegetable greenhouse lighting circuit
- Connection circuit of thumbwheel switch ICM7217
- single pulse generating circuit
- Single pulse signal generating circuit e
- Single pulse signal generating circuit d
- Internal functional block diagram of MAX8775
- Simple magnetizer circuit 2