This is Dan Armstrong Green Ringer guitar effect for your electric guitar. The guitar effect is sold at high price at the market. Now, you can build your own low cost guitar effect… 🙂 The transistor marked ” * ” has no markings other than three stripes: green, blue and white from top to bottom.… Read More »
Here’s a circuit of 7W audio amplifier that is very simple and very easy to build. This amplifier is built using TBA810 as the main component with the support of a few passive components. This circuit can work well, kits and components of this circuit can be found easily at an electronics store in your… Read More »
The following diagram is the circuit diagram of simple 4W audio amplifier based TDA1013B. The amplifier is based on integrated audio amplifier chip, TDA1013B which is able to gained the audio power output up to 4W at 8 ohm loads. Wide supply voltage range can be used for this circuit from 10VDC to 40VDC. Recommended… Read More »
Above scheme diagram is turbo bass circuit that can be used to multiply the low frequency sound signals (bass) on your audio system, it also called “bass booster” circuit. This circuit is an active circuit in which the incoming audio signal from the input will be strengthened in the first op-amp. The second op-amp that… Read More »
The following image is the scheme diagram of six LED stereo VU display circuit which build using Dot/Bar Display Driver IC LM3915. This VU display should be connected before amplifier module circuit. You may connect this circuit at pre-amp output, tone control input/output or equaliser input/output. This circuit powered with 12V DC supply. About LM3915:… Read More »
This is a inexpensive high fidelity (hi-fi) tone control circuit designed just with two low cost transistors as the active components. The schematic is one channel (mono) tone control, build the similar circuit will make it become stereo channel. This Hi-Fi tone control circuit can be operated with wide range supply voltage, 12V – 24V… Read More »
This insect repellent circuit will repel insects such as mosquitoes, flies and cockroaches from your home or yard effectively. circuit uses a specific frequency to disrupt the insect so the insect will go away from this circuit. This insect repellent circuit can be placed inside or outside the home (for speakers). If you want to… Read More »
Here is the USB sound card circuit based on PCM2706 which dedicated for USB audio. With USB controller module inside PCM2706, there is no more additional programming to the IC. The computer system will automatically detect this circuit when connected to the USB port. You will get stereo audio channel output from this circuit. Schematic… Read More »
This is an audio mixer circuit which designed along with VU meter circuit. The circuit is for one channel input, if you need, for example 5 channel mixer, then you need to build 5 similar circuits. The this audio mixer uses three potensiometers to adjust volume level, low frequency (bass) level and high frequency (treble)… Read More »