Tube style sig gens will drive up to 30VAC out, but into a 600 Ohm load. Lowest output impedance for sig gens is a rare 50 Ohms, most common is 600. For driving speakers directly you are probably going to need a buffer amp. The cleaner you buy the deeper your wallet needs to be. The better oscillators (sine only) use Wein Bridge oscillators. That will get you about 1% distortion at best. The main ic is the XR-2206 which sells for about $6.50 US. But you might find a 5AR4 in some of themįunction generator kits start at about $30 US. (201C, 200CD, 200AB, etc) These use more power and have a larger footprint. But there is always the older tube oscillators from HP like the 200 series. Wavetek makes a lot of function generators but the sine waves are derived from square waves with a progressive diode array, so the distortion is not as low as an RC oscillator is.Īll the above are SS. SG-501A, SG-502 & SG505 for very low distortion. Then there's the Tektronix TM-500 series plug-ins that require a mainframe to use. Also a General Radio (Gen Rad) 1310A or B is nice but sine only. A Krohn Hite 5700 meets these requirements. Leader LAG-125 has even more, as does an LAV 191A, but they're more expensive with meters. Leader LAG-120B has everything mentioned.
Square waves are also nice in the same instrument. And at least 5 volts RMS output with step & variable attenuation and low distortion.
Commercial audio test tone generator for sale full#
Click to expand.You want full audio coverage and beyond up to at least 100KHz.