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LM317 Audio Amplifier - ElectroSchematics.com
https://www.electroschematics.com/lm317-audio-amplifier/
This is a class A audio amplifier built with LM317 that delivers a maximum 1W audio power. Use a good heatsink for the LM317 IC and adjust the 5K variable resistor so that you have 4.5V on 10Ω resistor (or LM317 pin 2, Vout). LM317 amplifier schematic LM317 datasheet Source: BackyardAmusement’s Youtube Channel
Datasheet - LM217, LM317 - 1.2 V to 37 V adjustable ...
https://www.st.com/resource/en/datasheet/lm317.pdf
LM317T LM317T-DG LM317D2T-TR LM317P LM317S-TR LM317BT LM317BS-TR. LM217, LM317. Device summary. DS0433 - Rev 22 page 13/34. 8 Package information. In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade ...
LM 317 as audio amplifier | Headphone Reviews and ...
https://www.head-fi.org/threads/lm-317-as-audio-amplifier.222363/
Has anyone tried using an LM317 as an audio amplifier? I've seen several schematics but never an actual device. National has a couple of schematics in the LM317 data sheet where the 317 is a current source and a LM195 or LM395 for an output transistor.
1.5 Amp Adjustable Power Supply Kit - LM317T (#5352 ...
https://vakits.com/15-amp-power-supply-adjustable-lm317t
1.5 Amp Power Supply Adjustable LM317T The circuit is a standard, step-down, full-wave bridge-rectified, capacitor-filtered, with a linear low-dropout Voltage Regulator. It uses the LM317 Adjustable Voltage Regulator IC which is rated for 1.2V to 37v 1.5 Amps The circuit can accept low-voltage AC or DC inputs.
Control an LM317T with a PWM signal - EDN
https://www.edn.com/control-an-lm317t-with-a-pwm-signal/
The LM317T from National Semiconductor is a popular adjustable-voltage regulator that provides output voltages of 1.25 to 37V with maximum 1.5A current. You can adjust the output voltage with a potentiometer. The circuit in Figure 1 replaces the potentiometer with an analog voltage that you can control from a PWM (pulse-width-modulation) signal. You control …
LM317+TL431, really? - diyAudio
https://www.diyaudio.com/community/threads/lm317-tl431-really.248335/
Looking at the TI TL431 datasheet, at page 30 you find the implementation shown in attachment 1. TL431 is used as a reference at the LM317 ADJ leg, with a 8K2 resistor from input to ADJ leg. TL431 cathode current varies with input voltage. Attachment 2, 3 and 4 shows the rejection, impedance and noise of this implementation.
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