#231: Circuit Fun: Stairstep generator using 555 and op amps
![](https://i.ytimg.com/vi/CQTGhcjE7Ww/mqdefault.jpg)
5:30
#203: Schmitt Trigger Oscillator revisited | TDR | Measure Capacitors and Inductors
![](https://i.ytimg.com/vi/OlhN7ADpKds/mqdefault.jpg)
9:02
#328: Circuit Fun: Op Amp Signal Conditioning - a Practical Example
![](https://i.ytimg.com/vi/KFVVozlXoOk/mqdefault.jpg)
12:48
#380: Circuit Fun: Twin-Tee Oscillator - low distortion op amp sine waves
![](https://i.ytimg.com/vi/ZOLLoa2fH24/mqdefault.jpg)
11:14
#232: More Circuit Fun: Simple transistor curve tracer using Stairstep generator circuit
![](https://i.ytimg.com/vi/Q5tcf1pYZRc/mqdefault.jpg)
14:48
Adjust the Duty Cycle of the 555 Timer without Changing the Frequency
![](https://i.ytimg.com/vi/3fiUZZlveS0/mqdefault.jpg)
14:52
#247: Circuit Fun: 5 Transistor ESR Meter circuit by EEVBlog user Jay_Diddy_B
![](https://i.ytimg.com/vi/iqokUHfbWrc/mqdefault.jpg)
12:20
Let's make a Voltage Controlled Oscillator (VCO)
![](https://i.ytimg.com/vi/ibnz5UjQ4u0/mqdefault.jpg)
16:43