"The ideal cost effective amplifier for ultra high speed Patch Pipette Current Clamping" 

• Operates as both a Bridge Current Clamp and a Continuous Voltage Clamp Amplifier. 
• Small Box Probe in five current ranges with automatic decimal point selector on meter
 
• Gated Independent Step Command current or voltage generator with a three digit digital push wheel programming dial.
 
• LED indicator lights for headstage multiplier and meter mode
 
• Buzz control to facilitate cell penetration
 
• Small size takes up less rack space, yet is uncluttered, easy to use, with well defined controls
 
• Optional 1000 Gain AC Coupled Headstage for extracellular recording 

The BVC-700A is a microelectrode preamplifier with both Bridge Current Clamp and Continuous Voltage Clamp Capability. The BVC-700A was designed to serve a wide variety of applications including: Continuous Voltage or Current Clamping; Patch pipette recording; Intracellular recording; Extracellular recording (with the optional 8024 headstage). 

The BVC-700A is a complete instrument with DC and pulsed voltage clamping and current passing capability, filtering, electrode impedance testing, and a LCD voltage, current, and electrode impedance meter . The optional BUZ-1 Universal Buzz Box adds amplitude, duration, and frequency features for rupturing into cells (buzzing). 

Specifications

• Headstage size: 3.7 cm (1-1/2") X 2.9 cm (1-1/8") X 2.3 cm (7/8")
• Standard Headstage: N=.1 (although the N=.1 is the standard Headstage, the N=.01 is also a very popular headstage for patch pipette current clamping)

Current Multiplier N	Max I	RF (Feedback resistor )	RMS Noise / Bandwidth / Model cell Resistance	Bridge Balance Range (ohms)	Cp range	Input Resistance
10	10uA	1Meg	25uV,10Khz,1M	100K&1M	20pF	10Gig
1	1uA	10Meg	50uV,10KHz,10M	1M&10M	20pF	100Gig
.1 (standard)	100nA	100Meg	50uV,1KHz,100M	10M&100M	20pF	1000 Gig
.01	10nA	1Gig	40uV,100Hz,1G	100M&1G	20pF	10KGig
.001	1nA	10Gig	35uV,10Hz,10G	1G&10G	20pF	100KGig

• Filter Response: Switch selectable DC to 1kHz, 3kHz, 5kHz, 10kHz, 30kHz and Wide Band 
• Input Bias Current: 1 x 10-12 Amps (Adjustable to zero) 
• Rise Time to Pulse: Typically 10 microseconds into 10 megohm resistor (10 to 90%), 50 microsecond into 100 megohm.
• Voltage Gain: X10 and X100 
• Output Impedance: 500 ohms all outputs 
• Offset Voltage: +200mV 
• Balance Reading: Two ranges 0 to 1 megohm and 0 to 10 megohm divided by headstage scaling N (10 turn digital dial) 
• Electrode Impedance Test: 1mV per megohm square wave (N), Also reads on meter.
• Holding Current Range: 0 to +100 nA (10 turn digital dial) scaled by headstage multiplier N 
• Holding Voltage Range: 0 to +200 mV (10 turn digital dial) 
• Step Command Range V Camp: Two ranges +99.9mV(X0.1), +999mV(X1) 
• Step Command Range I Camp: Two ranges +99.9nA(X0.1), +999nA(X1) scaled by headstage multiplier N 
• Gated Input: +2 volt to +20 volt level turns on programmed Step Command 
• Monitor: 1999 mv meter displays voltage, current and electrode impedance (decimal point is automatically set) 
• External Command Input BNC: V Clamp- 20mV/V; I Clamp: Selectable 20nA/V or 100nA/V scaled by the headstage multiplier
• Size: 3 1/2 inch by 19 inch rack 
• Power: 115/230VAC 50/60Hz 
• Electrode Holders: Low noise polycarbonate in two sizes: HB120 for glass 1.0 to 1.2mm O.D.; HB180 for glass 1.5 to 1.8 mm O.D. (order separately). 
• Extracellular Recording: 8024-15 Extracellular Headstage (AC coupled, voltage gain = 1000) (order separately). 
• Optional: 7001 Spare Headstage (Specify N) 

BVC-700A

Intracellular Bridge & Voltage Clamp Amplifier with one headstage (standard is N=0.1) Also requires the use of one Pipette Holder (please see below )

$5,420.00 

HB120

Pipette Holder for use with 1.0 to 1.2 millimeter glass (Also see Pipette Holders and Parts section 

$ 75.00 

HB180

Universal Pipette Holder for use with 1.0 to 1.8 millimeter glass (Also see Pipette Holders and Parts section) 

$ 85.00 

7001

Spare Headstage (Specify N=.001, .01, .1, 1, 10 )

$ 420.00 

8024-15

Extracellular Headstage (AC coupled, voltage gain = 1000) 

$ 550.00 

BUZ-1

Universal Buzz Box (see BUZ-1 data sheet page for details) 

 $ 490.00 

• IX2-700 Two channel 
• IX1 Single Channel 
• 8700 Cell Explorer 

• 3900A (high performance integrating, extremely fast current clamp) 
• PC ONE (general purpose, moderate cost)