Voltase hobby: booster

Sunday, September 7, 2014

Tone Booster Schematic Wiring diagram

This is the tone booster schematic diagram which is published on Everyday Electronics, September 1978 edition. The peaks of frequencies is at 5000 Hz for a “cleaner and more penetrating” sound. The Q1 type is ztx384, while the Q2 is BC415p.

Simple Tone Booster Schematic Diagram

Saturday, September 6, 2014

Simple Systematic Power Booster Wiring diagram Schematic

This is a Simple Systematic Power Booster Circuit Diagram. The Power Booster solves the power distribution problem in a CATV network caused by high resistance and low energy-efficient. This power booster functions as a high-efficiency `power multiplexer` or, if you supply an external signal-source, as a high-power linear amplifier.

Simple Systematic Power Booster Circuit Diagram

If you want to drive a load with a high-power square wave, the schema simply draws power from two external power sources, VI and V2, alternately. In this mode, the schema`s power-handling devices function as switches, dissipating minimal power. The RC time constant of the integrator, IC1, determines the schema`s oscillation period. If you supply an external drive waveform, the schema functions as a linear amplifier, and, consequently, inherently dissipates varying portions of that power.

The power amplifier is stable for gains > 15. Diodes D1 and D2 limit the FET`s gate-voltage swing to less than 15 V. D3 is a dual Schottky diode that protects the FETs from short diagram between the two supplies, VI and V2, through a FET`s parasitic diode. With D3 in place, you can choose either power channel for the higher voltage input, lb drive the FETs, Q5 and Q6, at switching frequencies greater than 1 kHz, you will have to use gate drivers for them.

Tuesday, September 2, 2014

Bass Booster Wiring diagram Schematic

This Bass Boost is todays sound... whether its the driving, gut-vibration pulsation of disco, or the solid bass line of soft, hard, or laid-back rock. One way to get the modern bass-boost sound without running out and buying an all-new expensive piece of equipment is to use a Bass Booster between your guitar, electronic organ or what-have-you, and the instrument amplifier.

A bass booster strips the highs from the instruments output signal and amplifies low frequencies, feeding on "all-bass" sound to the instrument amplifier. Naturally, the bigger the speaker used with the amp, the more powerful the bass: use 15-inchers with the Bass Booster and you can rattle the windows. Bass Booster is powered by an ordinary 9 volt transistor radio battery. It can be assembled on a small printed board or on a veroboard using point to point wiring. The booster connects between your instrument and its amplifier through two standard RCA Jacks.

Circuit Diagram:

Bass Booster Circuit Diagram

Parts:
P1 = 50K
P2 = 100K
R1 = 22K
R2 = 470K
R3 = 47K
R4 = 10K
R5 = 470R
R6 = 1K
Q1 = 2N2222
C1 = 2.2uF-25v
C2 = 100nF-63v
C31 = 00nF-63V
C4 = 3.3uF-25v
C5 = 470uF-25v
D1 = 5mm. Red Led
Q1 = 2N2222
B1 = 9v Battery
J1 = RCA Audio Input Socket
J2 = RCA Audio Output Socket
S1 = On-Off Switch

Using Bass Booster:

Connect your electronic guitar or other electronic instrument to input jack J1; Connect output jack J2 to your instruments amplifiers normally-used input. With power switch S1 off, key S2 so the instrument feeds directly to the instrument amplifier. With P2 set full counter-clockwise (Off), turn power switch S1 on, key S2 once, and advance P2 for the desired Bass Boost level. To cut back to natural sound just stomp down on S2 and key the Bass Booster out. Dont worry about leaving power switch S1 on for several hours of a gig. The schema pulls less than 1mA from the battery, so battery will last many, many months.

Streampowers

Monday, September 1, 2014

Simple Mic Booster Wiring diagram Schematic

This is a Simple Electronic Mic Booster Circuit Diagram. Anyone who’s spent much time searching the web for interesting diagram is likely to have found at least one TL431 based audio amplifier, the schema being based on the principle that any comparator can be used in linear mode if it’s rolled off with enough negative feedback. Although the TL431 is often referred to as a programmable or adjustable zener, it is in fact a comparator with it’s own 2.5 V reference all neatly wrapped up in a TO92 package.

The problem with the TL431 amplifiers to be found on the web is that they simply roll it back with large nfb and leave it at that, which results in ver y low gain, to make mat ter s worse some such diagram make a bit of a hash of biasing the control input.

Electret Mic Booster Circuit Diagram

The schema presented here takes care of the low gain by adding an AC shunt to the feed-back path and using an electret mic for the input the 2.5 V set on the control input at stable operating condition suits an electret mic per fectly. The first prototype had a 35 ohms loudspeaker as a load (RL), this gave good results although the TL431 ran a bit warm with a Vccof 12 V. An old 130 ohm telephone earpiece is likely to present a less stressful load. AC shunt C2 (100 µF) has to be a quality component in terms of its ESR specification don’t just use a scruffy capacitor lying about as you may experience RF sensitivity. It was necessary to add a series resistor (R3; about 100 ohms) or in extreme cases an inductor (L1; 100 – 220 µH).
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Components C1 & R1 are entirely optional to selectively feed some unshunted feedback to reduce noise; 1.5 k? & 5.6 nF are as good a place as any to start off with.Initial set-up depends on the current drawn by the electret mic and the value for RL any-where between 200 and 2,000 ohms is good. R2 allows the TL431 cathode to swing despite the AC shunt, 1.2 k? was found to be satisfactory, P1 can be a 47 k? trimpot and is used to set the voltage drop on RL. In the case of moving coil speakers a compromise between volt-age swing and prebiasing the cone should be sought, with a resistive load adjust for 0.5 Vcc, once the operating point is determined P1 can be measured and replaced by an equivalent fixed resistor.

The schema has a couple of handy features, firstly it wor k s ver y well on the end of a twisted-pair the output can be tapped off at the wiper if RLis a pot at the power supply end, secondly by salvaging the JFET from an old electret mic (some common types of JFET will work but not quite as well), just about any piezo electric element can be used as the transducer. Brass disc sounders give a good output (handy as vibration sensors if glued to a structure); even the quartz discs from clock crystals give some output, a phono crystal cartridge gives a high output and the piezo-ceramic pellet from a flintless cigarette lighter gives a huge output... the range of possible applications is awesome!

A surprising application is the ability to test the microphonic sensitivity of ordinary capacitors! Disc ceramic types don’t need to be tapped very hard to produce an output but rolled metalised foil types produce some out-put too. Link