A device or circuit that generates an AC signal at a certain frequency.
1
vote
1answer
65 views
Twin T circuit noisy
I've been fiddling with a twin-T percussion oscillator with success. It's built on a breadboard and it sounds exactly how it should sound (damped sine wave, big 808/909-kind of kicks). However it's ...
4
votes
6answers
461 views
Design for an analogue oscillator that doesn't drift in frequency?
VCOs (Voltage Controlled Oscillators) in analogue music synthesizers are notorious for drifting with temperature. What design solutions are there for an analogue audio VCO that keeps close (as in ...
2
votes
2answers
95 views
What is the highest frequency possible to be generated with electronic circuits
First, its sound oscillators for low-frequency audio waves. Then Radio wave oscillators varying from low frequency AM to high frequency Cell-phones. Then microwave oscillators in the giga hertz. What ...
1
vote
2answers
104 views
180 Phase shift for oscillator
I am currently learning how to design/build a crystal radio receiver, transmitter and have a question for the 180 degrees phase shift for the carrier amplifier/oscillator system.
I commonly see this ...
3
votes
3answers
163 views
How to build an accurate oscillator around 1 kHz?
Is there a way to build an accurate oscillator producing a sine wave for a single fixed frequency in the 500 Hz - 5 kHz range, using relatively common components?
Any frequency within this range ...
-1
votes
1answer
155 views
Op Amp based Colpitts oscillator
I have designed an op-amp based Colpitts oscillator in multisim. When I press run button it shows- "timestep too smaall error". I've googled and tried everything but it still shows the error.
The ...
-3
votes
1answer
87 views
having problem in creating 555 oscillator in breadboard [closed]
i am quite new in electronics department and so have a very little knowledge about it...ok so i am going to set up a 555 oscillator.....i have the 555 timer chip, a solderless breadboard and resistors ...
1
vote
1answer
174 views
How to design an Oscillator Circuit (500 MHz range) with no Op amps?
I am trying to design an Oscillator circuit which can produce a good sine wave with a frequency of at least 500 Mhz. This is for RFID applications. I have tried to use an class E oscillator, but i ...
1
vote
1answer
45 views
DS1077 to drive a PIC's clock
I found the DS1077, a "dual-output, programmable, fixed-frequency oscillator". I was wondering if it would be possible to let this chip provide the clock signal for the PIC(18F46K22) that operates the ...
-2
votes
2answers
266 views
Radio with crystal oscillator
Is it possible to make a 20 MHz radio with this
by creating a circuit consisting of a battery, that crystal oscillator and an antenna?
3
votes
2answers
114 views
What's wrong with this Phase Shift Oscillator?
I am trying to design a phase shift oscillator, using a CE Amplifier.
I have a Vc of approximately 6V, gain of approximately 40(>29, as required).
I aim for an oscillation frequency of 1.5 kHz.
But ...
1
vote
1answer
71 views
Will an IC that requires an Oscillator work without one?
I have a PL2303HX and I just etched my board with a USB to Serial IC (PL2303HX). The problem is that it requires a 12 MHZ crystal but I don't currently have.
Just a side note, the IC is on the same ...
4
votes
4answers
298 views
Why aren't 1Hz crystals used to measure seconds?
According to Wikipedia:
Many clocks use a 32.768KHz crystal. Is this because the crystal is smaller than a 1Hz crystal?
If 1.0 Hz == 1.0 second. Then, why the need for the division?
2
votes
0answers
47 views
PIC16F877A latchup/glitching
I have a PIC16F877A microcontroller with a 19.6608 MHz crystal, wired for 12V ICSP. I can reprogram the chip just fine, and it runs almost flawlessly (it's blinking an LED right now as I type). Only ...
2
votes
4answers
80 views
What kind of oscillator should I use for a binary clock?
I've seen that a lot of clocks use a 32.768KHz crystal. I'm curious why that is exactly. I am working on a binary clock project with some 4520 ICs. I have some 555 timers too, but I want to use a ...
