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Category: Inside Circuits Views: 3009 Rank: 5 A power amp designed for use in low voltage, especially battery-operated, applications. For minimum parts count, C1 and C2 can be omitted.  With pins 1 and 8 open circuit the gain in internally set to 20 dB. Datasheet file1: Click here to download LM386.pdf datasheet.
Related circuits The CMOS amplifier is biased into the linear region by resistor RB. The pi-type crystal network (CI and C2, and XTAL) provides the 180 phase shift at the resonant frequency The probe relies on the power supply of the CUT (circuit-under-test). The input to the probe, at probe tip, is fed along two paths. One path flows to the clock inputs of U2a and U2b. The other path feeds both the inverting input of Ulc, which is set up as an inverting-mode integrator, and the... This circuit indicates that a power outage occured for 1, 10, 100, and 500 seconds with the values given for R* and C* Three-Decade 15Hz To 15Khz Wien-Bridge Oscillator In this circuit, an LM741 op amp drives a Wien-bridge network using two zener diodes as This solid-state switch senses and interrupts an overcurrent condition within 2 /is. II allows the circuit to float. IC The sensor is based on the selective absorption of hydrocarbons by an n-type metal-oxide surface. The heater in the device serves to burn off the hydrocarbons once smoke or gas is no longer present in the immediate area; hence, the device is reuseable. When initially turned on, a 15 minute... Originally, this circuit was used to sense a low-water level in a Christmas tree stand, but the circuit can be use This circuit uses a dc amplifier (324) in a bar-graph circuit that uses an LM339 Quad comparator IC to sense dc levels.
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Comments
jason wrote on Mar 10, 2008
what kind of IC did you use?
adam wrote on Sep 16, 2008
it's the IC LM386
Ralph wrote on Jul 28, 2008
What is the minimum operating voltage for this amp?
Javier Munoz wrote on Sep 24, 2008
hello, I am an student from venezuela and I want you to help me to solve some doubts about this amplifier... what electronic players can I connect to the amplifier? a CD player, etc ? forgive me for my poor english
.--. wrote on May 8, 2009
well this circuit works great at 9volt which is simple to get hold of and use
etram wrote on Jun 15, 2009
thanks for the circuit! works great as a pre amp. and fuzz effect
440hertz wrote on Aug 13, 2009
great amp, ive used it in this form in reciever projects, great for replacing discrete component audio section in older projects. For guitar a better version is the 'Ruby' and variants with variable gain and other improvements.
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