Guitar Tone Control

Stand-alone, 9V battery powered unitThree-level input selector, three-band tone controlDevice purpose:This preamplifier was designed as a stand-alone portable unit, useful to control the signals generated by guitar pick-ups, particularly the contact "bug" types applied to acoustic instruments. Obviously it can be used with any type of instrument and pick-up.It features a -10dB, 0dB and +10dB pre-set input selector to adjust input sensitivity, in order to cope with almost any pick-up type and model.A very long battery life is ensured by the incredibly low current consumption of this circuit, i.e. less than 800µA.Parts:P1,P2_________100K Linear...

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60 Watt Guitar Amplifier + Tone Control

The following is a circuit of amplifiers are equipped with the appropriate regulatory tone in use to strengthen the electric guitar, using a single-rail supply of about 60V and capacitor-coupling for the speaker . The advantages for a guitar amplifier are the very simple circuitry, even for comparatively high power outputs, and a certain built-in degree of loudspeaker protection, due to capacitor C8, preventing the voltage supply to be conveyed into loudspeakers in case of output transistors' failure.  Skema Rangkaian Guitar Amplifier + Tone ControlIn all cases where Darlington transistors are used as the output devices it is essential that...

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Quality Video Mixer GX4201

The modules described in this application note can be used as stand-alone multiplexers for both NTSC/PAL broadcast and any HDTV format applications. In addition, by virtue of their size, their performance and the SIP pin outs, they may be used to form larger n x m, professional video matrices. Each GX4201 device is a 1x1 video crosspoint characterised by a low distortion, unilateral signal path consisting of emitter followers at the input and output with level shifting circuits in between.High definition TV places additional requirements on crosspoint performance in video switching systems.  These include a wider flat frequency response...

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Digital Message Recorder

The purpose of this digital electronics project is to record messages using a dedicated voice recorder integrated circuit. Recordings are stored in a non volatile memory cells, which means that the message will still be saved even though power has been removed from the device. Winbond’s ISD2500 Series provide high-quality, single-chip, Record/Playback solutions for 60 seconds to 120 seconds message applications. The CMOS devices include an on-chip oscillator, microphone preamplifier, automatic gain control, antialiasing filter, smoothing filter, speaker amplifier, and high density multi-level storage array. In addition, the ISD2500 is microcontroller...

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