Test circuit with bridge (CB22530E)

This bridge-biased transistor test circuit measures gain in the range 0 to 300. Circuit is from Radio Electronics June 1952.

Power Stage for CMOS Circuits (CB12727E)
In the figure we give a suggestion of a high-power stage to excite a speaker with the 2N3055. The...
Wireless Waa Waa Pedal (CB6879E)
This guitar pedal was found in a 2004 documentation. The signal is transmitted to an FM receiver...
1 kHz Low Pass Filter LM3900 (CB14188E)
The circuit shown below is from the National Semiconductor's 1994 Linear Applications Handbook. The...