LM386
The LM386N-1
The LM386 (AKA JRC386) is an integrated circuit consisting of a low voltage audio power amplifier.[1] It is suitable for battery-powered devices such as radios, guitar amplifiers, and hobbyist projects. The IC consists of an 8 pin dual in-line package (DIP-8) and can output 0.5 watts power using a 9-volt power supply.
Models
There are different models of the LM386 that have slightly different specifications, outlined below.
| Chip Name | Min Voltage | Max Voltage | Minimum Output Power | Typical Output Power | Output Impedance |
| LM386N-1 | 4 volts | 12 volts | 250 mW | 325 mW | 8 ohms |
| LM386N-3 | 4 volts | 12 volts | 500 mW | 700 mW | 8 ohms |
| LM386N-4 | 5 volts | 18 volts | 700 mW | 1000 mW | 32 ohms |
Guitar amplifier usage
- The well-known "Smokey Amp" created by Bruce Zinky uses an LM386 and is notable for being able to fit in a cigarette package
- The "Little Gem" and "Little Gem MkII" are modified/cloned versions of the "Smokey Amp".[2]
- The "Ruby" amp[3] is a modified version of a Little Gem amplifier.
- The Marshall MS-2 and MS-4 miniature practice amplifiers use a single-in-line packaged NJM386 manufactured by JRC.
- The LM386 is one of the most common amps used in DIY guitar preamplifiers and sustainers due to its ability to run on a single 9 V battery.
See also
References
- ↑ "Data Sheet (National Semiconductor)". Texas Instruments. 2000. Retrieved 4 Nov 2013.
- ↑ "Little Gem amps at runoffgroove".
- ↑ "Ruby amp at runoffgroove".